SUBLEASE AGREEMENT
                         195 SOUTH MILPITAS BOULEVARD
                             MILPITAS, CALIFORNIA

     This Sublease (hereinafter the "Sublease") is made and entered into by 
and between GENERAL SIGNAL CORPORATION, a New York corporation (hereinafter 
"Sublessor"), and CONNER PERIPHERALS, INC. a Delaware corporation (hereinafter
"Sublessee") for the Premises hereinafter described. Sublessor is the Tenant, 
as successor in interest to Telecommunications Technology, Inc. ("TTI"), under
that certain Net Lease Agreement for the Premises between the Bryan Family 
Partnership II, Ltd. (the ultimate successor in interest to CAMSI II, a 
California general partnership), as Landlord, and TTI, as Tenant, dated December
20, 1985, as supplemented and amended by that certain Addendum to the Net Lease 
Agreement, that certain First amendment to Lease dated October 24, 1986, and 
that certain Second Amendment to Lease dated September 30, 1988, a copy of which
is attached hereto as Exhibit "X" to the Sublease (hereinafter the "Master 
Lease"). The Bryan Family Partnership II, Ltd., Landlord under the Master 
Lease, is hereinafter referred to as the "Master Lessor". Sublessor hereby 
leases to Sublessee and Sublessee hereby hires from Sublessor the Premises for 
the term and on and subject to the terms, conditions, covenants and agreements 
hereinafter set forth.

     1. Premises. The Premises shall consist of that certain approximately 
Seventy-Seven Thousand Two Hundred (77,200) square foot building located in the 
City of Milpitas, County of Santa Clara, State of California, shown 
cross-hatched on Exhibit "Y" attached hereto and incorporated herein by this 
reference, and commonly referred to as 195 South Milpitas Boulevard. Sublessee 
also shall have the following appurtenant rights with respect to the real 
property on which the Premises are located, which is described in Exhibit "Z" 
attached hereto and incorporated herein by this reference (hereinafter the 
"Common Area"): (i) the exclusive right to use the parking spaces located in 
the Common Area (the location of which may be redesignated from time to time by 
the Master Lessor without affecting Sublessee's obligations under this 
Sublease); and (ii) such other rights as are necessary and convenient to 
Sublessee's use and possession of the Premises or performance of Sublessee's 
obligations under this Sublease. (Notwithstanding the number of parking spaces 
existing as of the commencement of the Term of this Sublease, in the event by 
reason of any rule, regulation, order, law, statute or ordinance of any 
governmental or quasi-governmental authority relating to or affecting parking on
the Common Area, or any other cause beyond the Master Lessor's reasonable 
control, the Master Lessor is required to reduce the number of parking spaces on
the Common Area, the Master Lessor shall have the right to proportionately 
reduce the number of parking spaces available for Sublessee's exclusive use 
without affecting Sublessee's obligations under this Sublease.) In addition, 
Sublessee shall have a non-exclusive easement for vehicular ingress and egress 
in and over the paved roadways in the Common Area and pedestrian ingress and 
egress in and over the Common Area. Except for the right of Sublessor and/or 
Master Lessor to enter upon and use the Common Area as may be necessary for the 
performance of their respective obligations under this Sublease and/or the 
Master Lease, and subject to conditions, covenants, restrictions, easements and 
encumbrances of record, Sublessee shall have the exclusive right to use the 
Common Area; provided, however, that Sublessee's rights to use that portion of 
the Common Area marked by the dashed lines on Exhibit "Y" shall be subject to 
the terms and conditions of that certain Deed from Beatrice C. Wrigley to the 
City and County of San Francisco dated October 31, 1949, and recorded November 
14, 1949, Book 1875, Page 312 of the Official Records, Santa Clara County and 
that certain San Francisco Water Department Land Use Permit by and between the 
City and County of San Francisco and Master Lessor's predecessor in interest, 
dated

                                   1       


 
June 21, 1984 and recorded July 3, 1984 at Book I 692, Pages 502-509 of the 
Official Records, Santa Clara County. Sublessor and Sublessee acknowledge and 
agree that the building referred to in the Master Lease as 185 South Milpitas
Boulevard and the building commonly referred to as 195 South Milpitas Boulevard
are one and the same and said building constitutes the Premises under this 
Sublease. Sublessor and the Sublessee also agree that the information printed on
Exhibit "Y" regarding the Premises is for reference only and does not constitute
a representation or warranty by Sublessor as to the accuracy of such 
information.

  2. Term. Subject to the condition precedent in Paragraph 12 of this Sublease, 
the Term of this Sublease shall commence on the date Sublessor delivers 
possession of the Premises to Sublessee (and Sublessor shall deliver possession 
of the Premises to Sublessee promptly upon satisfaction of the condition 
precedent in Paragraph 12), and, unless sooner terminated as hereinafter 
provided, shall end on April 27, 1996.

  3. Rent. Sublessee shall pay to Sublessor as basic rent ("Rent") for the 
Premises the sum of Fifty Seven Thousand Nine Hundred Dollars ($57,900.00) per 
month. The Rent shall be due and payable in advance on or before the first day
of each and every calendar month during the Term of this Sublease, shall be paid
to Sublessor at the address designated in this Sublease for notices to 
Sublessor, or at such other address as Sublessor shall designate in writing, 
and shall be paid in lawful money of the United States without deduction,
offset, prior notice or demand. The Rent shall be pro-rated for any partial
month during the Term of the Sublease. The foregoing notwithstanding, the Rent
for the first month, or partial month, of the Term of the Sublease shall be
payable on the commencement date of this Sublease.

  4. Additional Rent. In addition to the Rent payable by Sublessee during the
Term of this Sublease, from and after the commencement date of the Sublease, 
Sublessee shall pay to Sublessor (unless Sublessor otherwise directs Sublessee
in writing) as Additional Rent, at the times specified in and otherwise in 
accordance with the terms of the Master Lease, all Taxes (as defined in the 
Master Lease), insurance premiums, charges for Services (as defined in the 
Master Lease), maintenance costs, Operating Expenses (as defined in the Master
Lease), and other charges, costs and expenses that Sublessor is required to pay
under the Master Lease, it being understood and agreed by Sublessor and 
Sublessee that this Sublease is to be a net lease as to Sublessor and that 
Sublessee, therefore, shall pay any and all amounts and shall perform all acts
which Sublessor is obligated to pay and/or perform under the Master Lease
(except for the difference between the basic Rent payable by Sublessee under 
this Sublease and the basic Rent payable by Sublessor under the Master Lease or
amounts Sublessor may become obligated to pay by reason of a breach of the 
Master Lease by an act or omission of Sublessor). Sublessor reserves the right
to direct Sublessee to make payments constituting Additional Rent directly to 
the Master Lessor or to other third parties, and concurrently with the payment
thereof, Sublessee shall give Sublessor written notice (and/or such other 
reasonable documentation as Sublessor may request) confirming the making of any
such payment and the amount thereof.

  5. Use. The Premises shall be used for electronic research and development, 
assembly, manufacturing and warehousing, and related office uses, but the 
Premises shall not be used for any other purpose or purposes whatsoever.

  6. Services. It is understood and agreed by Sublessee that the obligations
imposed on the Landlord under Paragraphs 6.2, 10.1, 11.2, 15.2.1, 15.2.2 and
15.3.1 of the Master Lease are obligations of the Master Lessor, and Sublessee
will look solely to said Master Lessor to perform said obligations.

 
                                       2

 
Sublessor shall permit Sublessee to make demand on the Master Lessor in
Sublessor's name to perform such obligations, and Sublessor shall reasonably
cooperate with Sublessee to enable Sublessee to make such demand, provided that
Sublessee agrees to pay all expenses incurred in connection with any such demand
and Sublessor's cooperation therewith, and to indemnify, defend and hold
harmless Sublessor against and from any claim, demand, liability, cost and
expense, including without limitation attorneys' fees, arising out of or
resulting from making or prosecuting any such demand and Sublessor providing any
such cooperation. Sublessee acknowledges and agrees that this Sublease shall be
a net lease as to Sublessor and that Sublessor shall have no obligations to
provide or to perform for the benefit of Sublessee any services, utilities,
improvements (other than those already in place at the commencement of the Term
of this Sublease), maintenance or repairs.

     7. Condition of Premises. Sublessee agrees that by taking possession of the
Premises it shall be deemed to have accepted the Premises and the Common Area as
being in good and sanitary order, condition and repair and to  have accepted the
Premises and the Common Area in their condition existing as of the date 
Sublessor delivers possession of the Premises to Sublessee, subject to all 
applicable laws, covenants, conditions, restrictions, easements and other 
matters of public record and the rules and regulations from time to time 
promulgated by the Master Lessor governing the use of the Premises and the 
Common Area. Sublessee further agrees (i) that Sublessor has no obligation to 
repair, paint, improve or otherwise alter the Premises or the Common Area (and 
that Sublessee is accepting the Premises and Common Area in their "AS-IS" 
condition as of the commencement of the Term of the Sublease), (ii) that neither
Sublessor nor Sublessor's agents have made any representation or warranty as to 
the suitability of the Premises for the conduct of Sublessee's business, the 
condition of the Premises (except as otherwise expressly set forth in Paragraph 
13 of this Sublease), or the use or occupancy which may be made thereof, and 
(iii) that Sublessee has independently investigated the Premises and matters 
related to Sublessee's use thereof and is satisfied that the Premises are 
suitable for Sublessee's intended use and that the Premises meet all 
governmental requirements for such intended use.

     8. Subject to Master Lease. This Sublease is subject and subordinate to the
Master Lease, and to all of the provisions thereof; and Sublessee shall not 
commit any act or omit to perform any act that will constitute a breach of the 
Master Lease. At any time, or from time to time, Sublessor, by prior written 
notice to Sublessee, can elect to require Sublessee to perform its obligations 
(or any of same) under this Sublease directly to the Master Lessor, in which 
case Sublessee agrees to do so and to provide to Sublessor (i) copies of any and
all notices or other communications it shall give to or receive from the Master 
Lessor at the time that any such notice or other communication is given or 
received, and (ii) written confirmation that any such obligation has been 
performed. Sublessor represents that, subject to the condition precedent 
specified in Paragraph 12 of this Sublease, it has the right to enter into this 
Sublease and this Sublease does not violate any provision of the Master Lease. 
Sublessor further represents and warrants that the copy of the Master Lease 
attached hereto as Exhibit "X" is a true, correct and complete copy of the 
entire Master Lease and all amendments relating thereto, that such Master Lease 
is in full force and effect as of the date hereof and will be in full force and
effect as of the commencement date of the Sublease term, and that there 
currently is no Default by Tenant (as that phrase is defined in the Master 
Lease), default by the Master Lessor, or, to the best of Sublessor's knowledge, 
other event which (with the giving of notice or the passage of time or both) 
could constitute a Default by Tenant or default by the Master

                                       3

 
Lessor under the Master Lease, nor shall any such Default by Tenant or default
by the Master Lessor, or, to the best of Sublessor's knowledge, such other
event, have occurred prior to the commencement date of the Sublease term. In
addition, so long as Sublessee is not in default of its obligations under this
Sublease, Sublessor shall (a) keep the Master Lease in effect, (b) not amend or
waive any provisions thereof without Sublessee's prior written consent, which
shall not be unreasonably withheld or delayed, (c) pay the Rent due under the
Master Lease and, unless relieved of such obligation as provided herein, comply
with its obligation under Paragraph 8.2(a) of the Master Lease (as it reads in
the Second Amendment to Lease) to maintain the insurance coverage specified
therein, and (d) reasonably cooperate with Sublessee as provided in Paragraph 6
of this Sublease in connection with enforcing the performance of the obligations
of the Master Lessor under the Master Lease. The foregoing notwithstanding, if
the Master Lease is terminated for any reason, whether by the Master Lessor,
Sublessor or otherwise (including, without limitation, termination by Sublessor
as permitted under Paragraphs 15.3.2 and 15.4 of the Master Lease (subject to
Sublessee's right to prevent such termination as provided in this Sublease)),
this Sublease shall terminate (without any liability on the part of Sublessor to
Sublessee by reason of such termination, except as hereinafter expressly
provided), and the parties shall be relieved of any further liabilities and
obligations under this Sublease (other than those that survive termination);
provided, however, if this Sublease is terminated due to a default under the
Master Lease, the party committing the act or omission that constitutes the
default under the Master Lease shall be liable to the non-defaulting party for
any liabilities, damages, costs and expenses, including without limitation
attorneys' fees, incurred or suffered by the non-defaulting party as a result of
or in connection with the termination, and such defaulting party hereby agrees
to indemnify, defend and hold harmless the non-defaulting party against and from
such liabilities, damages, costs and expenses.

     9.     Incorporation by Reference/Assumption. The terms, covenants and 
conditions contained in the Master Lease (a copy of which is attached hereto as 
Exhibit "X") are incorporated by this reference into this Sublease and shall 
be a party hereof to the extent and in the manner hereinafter specified, and 
Sublessee agrees to be bound by and perform such terms, covenants and conditions
of the Master Lease.

          (a)   The following terms, covenants and conditions of the Master 
Lease are not incorporated by reference into this Sublease and shall not be a 
part thereof: Paragraphs 1, 2, 3, 4.1, 8.1, 30.2(a), 37, 42, The Addendum to the
Net Lease Agreement (consisting of Paragraphs 43, 44, 45, 46, 47, 48, 49, and 50
of the Master Lease), Exhibits to the Master Lease (including Exhibits A, B and 
C), and the First Amendment to Lease.

          (b)   The following terms, covenants and conditions of the Master 
Lease are incorporated by reference into this Sublease and shall be a part 
thereof, except that the term "Tenant" as used therein shall mean the 
Sublessee and the term "Landlord" as used therein shall mean the Sublessor: 
Paragraphs 4.2, 4.3, 7, 8.2(c), 8.3, 8.5, 8.6, 9, 12.2, 14, 15.6, 15.7, 15.8, 
15.9, 16, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.1, 30.2(b), 30.2(c), 30.3, 
30.4, 30.5, 30.6, 30.7, 30.8, 30.9, 30.10, 30.11, 33, 34, 36, 38, 39, and 40.

          (c)   The following terms, covenants and conditions of the Master 
Lease are incorporated by reference into the Sublease and shall be a part 
thereof, except that the term "Tenant" as used therein shall mean the 
sublessee and the term "Landlord" as used therein shall mean both the 
Sublessor and the Master Lessor: Paragraphs 6.1, 6.3, 8.2(a) (as it reads in the
Second Amendment

                                       4

 
to Lease, which is incorporated by reference into the Sublease), 8.2(b), 8.2(d),
8.4, 10.2, 12.1, 17, 18, 20, 31, 32, and 35.

          (d)   The following terms, covenants and conditions of the Master 
Lease are incorporated by reference into the Sublease and shall be a part 
thereof, except that the term "Tenant" as used therein shall mean the Sublessee
and the term "Landlord" as used therein shall mean only the Master Lessor: 
Paragraphs 6.2, 10.1, 11, 13, 15.1, 15.2, 15.3, 15.4, 15.5, and 41.

          (e)   The foregoing notwithstanding, Sublessor and Sublessee agree 
that:

               (1)   As to Paragraph 6.2 of the Master Lease, Sublessee's 
obligation to promptly comply, at Sublessee's sole cost, with all laws, 
statutes, ordinances, rules, regulations, orders or requirements shall include, 
without limitation, the obligation to comply with the provisions of the 
Americans with Disabilities Act ("ADA") (and Sublessor makes no representation 
or warranty that the Premises and Common Area are in compliance with the 
provisions of the ADA, nor shall the Sublessor be responsible for bringing the 
Premises and Common Area into compliance with the provisions of the ADA).

               (2)   As to Paragraph 7 of the Master Lease, to the extent it 
references Taxes laid, levied, assessed or imposed upon Landlord, such reference
shall mean any such Taxes laid, levied, assessed or imposed upon Sublessor 
and/or the Master Lessor. In addition, the insert to Paragraph 7.3(a) of the 
Master Lease that is referenced by an asterisk shall refer to assessments 
existing as of the commencement date of the Sublease term.

               (3)   As to Paragraph 8.2(a) of the Master Lease (as such 
Paragraph is amended and made a part of the Master Lease by the Second Amendment
to Lease), Sublessor shall continue to obtain and maintain the "all risk" 
property insurance, including the rental income insurance, required thereunder, 
and Sublessee shall pay to Sublessor, as Additional Rent, the amount of the 
premium and shall be responsible for any deductible (said payments to be made by
Sublessee upon presentation of an invoice therefor by Sublessor); and in the 
event Sublessor maintains such "all risk" insurance as part of a blanket policy,
the amount to be reimbursed by Sublessee hereunder shall be reasonably 
determined by Sublessor on the basis of what such coverage would cost if a 
separate policy were obtained for the Premises but then allowing a reasonable 
discount to account for the fact that the coverage is maintained as part of a 
blanket policy. The foregoing notwithstanding, Sublessee shall be entitled to 
obtain and maintain the insurance required under Paragraph 8.2(a) of the Master 
Lease, provided that Sublessee first obtains the written consent thereto of the 
Master Lessor and the Master Lessor's written agreement that maintenance of such
insurance by Sublessee shall be in lieu of Sublessor maintaining the insurance
and Sublessor shall be relieved of its obligation to do so under the Master
Lease.

               (4)   As to Paragraph 8.2(d) of the Master Lease, the insert 
appearing on Page 5-A of the Master Lease that is referenced by the three 
asterisks shall not be a part of the Sublease.

               (5)   As to Paragraph 10.1 of the Master Lease, the insert 
denoted by one asterisk in the margin regarding the landlord's obligation to 
reseal and restripe the parking lot and wash the exterior of the Premises shall 
not be a part of the Sublease.

               (6)   As to Paragraph 12.1 of the Master Lease, the reference to 
the "Landlord" in the sixth to the last line thereof shall refer only to the 
Master Lessor.

                                       5

 
               (7)   As to Paragraph 12.2 of the Master Lease, the time and 
method of payment and accounting for all Operating Expenses payable under this 
Sublease shall be in the same manner as required by the Master Lessor under the 
Master Lease.

               (8)   As to the last sentence of Paragraph 13.1 of the Master 
Lease, Sublessee shall be entitled to make structural changes to the Premises 
provided that Sublessee first obtains the written consent of the Master Lessor 
authorizing such changes.

               (9)   As to Paragraphs 15.3.2 and 15.4 of the Master Lease, their
incorporation by reference into the Sublease shall not be construed to modify or
limit Sublessor's right to terminate the Master Lease (without incurring any 
liability to Sublessee) under the circumstances specified therein. The foregoing
notwithstanding, Sublessor shall immediately provide to Sublessee, by personal 
delivery or via telecopier, copies of the Master Lessor's notice of termination
(in the case of Paragraph 15.3.2 of the Master Lease) or estimate of the time 
needed to complete repair or restoration of the Premises (in the case of 
Paragraph 15.4 of the Master Lease), and: (i) in the case of Paragraph 15.3.2, 
Sublessor shall not exercise its right to terminate the Master Lease and, 
instead, will give the Master Lessor the written notice required under Paragraph
15.3.2 to keep the Master Lease in effect, if Sublessee gives written notice to 
Sublessor, by personal delivery or via telecopier not less than three (3) days 
prior to the expiration of the ten (10) day period specified in Paragraph 15.3.2
of the Master Lease, stating (a) that Sublessee does not want Sublessor to 
terminate the Master Lease, (b) that Sublessee will pay all costs and perform 
all other obligations required under Paragraph 15.3.2 of the Master Lease to 
keep the Master Lease in effect, (c) that Sublessee waives its right to 
terminate the Sublease pursuant to Paragraph 15.3.2 on account of the damage or 
destruction giving rise to the Master Lessor's notice, and (d) that from and 
after the date of Sublessee giving the notice to Sublessor the Rent payable by 
Sublessee to Sublessor under this Sublease shall be the same amount as the Rent 
payable by Sublessor to the Master Lessor under the Master Lease, as said Rent 
may be adjusted under the terms of the Master Lease; and (ii) in the case of 
Paragraph 15.4, Sublessor shall not exercise its right to terminate the Master 
Lease if Sublessee gives written notice to Sublessor, by personal delivery or 
via telecopier not less than three (3) days prior to the expiration of the ten 
(10) day period specified in Paragraph 15.4 of the Master Lease, stating (a) 
that Sublessee does not want Sublessor to terminate the Master Lease, (b) that 
Sublessee waives its right to terminate the Sublease pursuant to Paragraph 15.4 
on account of the damage or destruction giving rise to the Master Lessor's 
notice, and (c) that from and after the date of Sublessee giving the notice to 
Sublessor the Rent payable by Sublessee to Sublessor under this Sublease shall 
be the same amount as the Rent payable by Sublessor to the Master Lessor under 
the Master Lease, as said Rent may be adjusted under the terms of the Master 
Lease. The parties agree that in the event Sublessee gives the notice described 
herein to Sublessor, Paragraph 3 of this Sublease shall thereby, without any 
further action on the part of Sublessee or Sublessor being required, be amended
to provide that the Rent payable under this Sublease shall be the same as the 
Rent payable by Sublessor to Master Lessor under the Master Lease, as said 
Master Lease Rent may be adjusted pursuant to the Master Lease; but the other 
terms and conditions of the Sublease shall remain the same and in full force and
effect.

               (10)  As to Paragraph 18 of the Master Lease, Sublessor agrees 
that so long as Sublessee is not in default of its obligations under the 
Sublease, and provided the entry into the Premises is not for the purpose of 
protecting the Premises in the event of an emergency, Sublessor, in exercising 
its rights under said Paragraph 18, shall be accompanied by a representative

                                       6

 
of Sublessee while Sublessor is on the Premises, and shall comply with all 
reasonable securrity measures from time to time requested in writing by 
Sublessee. Sublessor further agrees that even if Sublessee is in default of its 
obligations under the Sublease, Sublessor, in exercising its rights under 
Paragraph 18 of the Master Lease, will comply with those reasonable security 
measures requested in writing by Sublessee that do not unreasonably interfere 
with the exercise of Sublessor's rights under said Paragraph 18.

  (11) As to Paragraph 22 of the Master Lease, the address for notices to 
Sublessor shall be:

                      General Signal Corporation
                      P.O. Box 10010
                      Stamford, CT 06904
                      Attention: General Counsel

     with a copy to:  Hoffman, Finney & Klinedinst
                      351 California Street
                      Suite 800
                      San Francisco, CA 94104
                      Attention: Kenneth H. Finney

and the address for notices to Sublessee shall be:

                      Conner Peripherals, Inc.
                      3081 Zanker Road
                      M/S 4408
                      San Jose, CA 95134-2128
                      Attention: Marla Ann Stark, Esq.

     with a copy to:  Conner Peripherals, Inc.
                      3081 Zanker Road
                      M/S 4408
                      San Jose, CA 95134-2128
                      Attention: Mr. Carl Neun

     with a copy to:  Conner Peripherals, Inc.
                      311 Turquoise Street
                      Milpitas, CA 95035
                      Attention: Mr. Ed Roney

provided, however, that this shall not preclude Sublessor from giving notices to
Sublessee at the Premises as permitted by said Paragraph 22. In addition, 
anything in Paragraph 22 of the Master Lease to the contrary notwithstanding, 
the notices that can be given by Sublessee to Sublessor pursuant to Paragraph 
9(e)(9) of this Sublease must be given by personal delivery or via telecopier.

  (12) As to Paragraph 24.2 of the Master Lease, Sublessee understands and
agrees that Sublessor, in turn, shall have to follow the procedures specified
therein vis-a-vis the Master Lessor, including without limitation obtaining the
Master Lessor's consent to any proposed assignment or subletting by Sublessee,
and that the refusal by the Master Lessor to consent to any such proposed
assignment or subletting by Sublessee shall, without more, entitle Sublessor to
withhold its consent (and the withholding of Sublessor's consent under these
circumstances shall be presumptively reasonable).

  (13) As to Paragraph 24.5 of the Master Lease, the interlineation denoted by 
three asterisks in the margin shall not be incorporated into the Sublease.

  (14) As to Paragraph 26 of the Master Lease, the interlineation denoted by 
four asterisks shall not be part of the Sublease, and the obligations specified 
in Paragraph 26 pursuant to which Sublessee must give notice to any beneficiary
of a deed

                                       7

 
of trust affecting the Premises of a default by the "Landlord" shall refer to a 
default by the Master Lessor. In addition, the second sentence of such Paragraph
26 shall not be incorporated into this Sublease.

  (15) As to Paragraph 39 of the Master Lease, Sublessee understands and agrees 
that Sublessor is not responsible for the acts or omissions of the Master Lessor
and/or any third party that succeeds the Master Lessor, and, accordingly,
Sublessor shall not be liable to Sublessee for a breach of said Paragraph 39
that arises out of or results from an act or omission of the Master Lessor or
any such successor to the Master Lessor.

  (16) As to any paragraphs in the Master Lease in which the term "Landlord" has
been deemed to mean either the Master Lessor alone or both the Master Lessor and
the Sublessor (such as, by way of example, Paragraphs 10.1 and 10.2), and a
payment is to be made to the "Landlord" by Sublessee, such payment shall be made
to Sublessor, unless Sublessor otherwise instructs Sublessee in writing.

  (17) As to Paragraph 8.6 of the Master Lease, for purposes of the release and 
waiver given by Sublessee, the property covered, and the circumstances under 
which the release and waiver apply, the term "Landlord" as used therein shall 
mean both the Sublessor and the Master Lessor.

  (18) The term "Lease," as used in the Master Lease shall mean this Sublease 
and/or the Master Lease as appropriate to effectuate the parties' intention to 
incorporate the terms, covenants and conditions of the Master Lease into this 
Sublease.

  10. Indemnity. In addition to, and not in lieu of other indemnities given by
Sublessee, including without limitation the indemnities in Paragraph 8.4 of the
Master Lease and in Paragraph 13 of this Sublease, Sublessee hereby agrees to
indemnify, defend and hold harmless Sublessor against and from any claims,
demands, liabilities, damages, costs and expenses, including without limitation
attorneys' fees, arising out or resulting from (i) a breach by Sublessee of any
term, covenant or condition of this Sublease, including without limitation any
act or omission by Sublessee that constitutes a breach of the Master Lease, and
(ii) the making by Sublessee of any "alterations" (as that term is defined in
Paragraph 13.1 of the Master Lease) in, on, about or to the Premises, on any
part thereof, including without limitation any structural changes permitted in
accordance with Paragraph 9(e)(8) of this Sublease. This provision shall survive
termination of this Sublease.

  11. Right to Reenter. Sublessor, in addition to any other rights it may have 
under this Sublease or at law upon the occurrence of a breach of this Sublease 
by Sublessee, shall have the right to reenter and retake possession of the 
Premises from Sublessee, and to remove all persons and property from the 
Premises and the Common Area, any property that is so removed to be stored in a 
public warehouse or elsewhere at the cost of and for the account of Sublessee. 
No such reentry or retaking of possession of the Premises by Sublessor pursuant 
to this provision shall be construed as an election to terminate this Sublease 
unless a written notice of such termination is given to Sublessee.

  12. Condition Precedent. Sublessee understands and agrees that it is a 
condition precedent to this Sublease that the Master Lessor give its prior 
written consent to this Sublease in accordance with the terms of the Master 
Lease. In the event the Master Lessor does not give its written consent to this 
Sublease in accordance with the terms of the Master Lease, either party,

                                       8

 
at its option, may thereafter terminate this Sublease by giving written notice
of termination to the other party; and neither Sublessor nor Sublessee shall
have any liability to the other in the event of such termination by reason of
the failure of the Master Lessor to give its consent. The consent of the Master
Lessor shall include: (i) the Master Lessor's certification that (a) the Master
Lease attached hereto as Exhibit "X" constitutes the entire Master Lease and all
amendments relating thereto, (b) the Master Lease is in full force and effect,
and (c) there currently is no Default by Tenant (as that phrase is defined in
the Master Lease), default by the Master Lessor, or, to the best of Master
Lessor's knowledge, other event which (with the giving of notice or the passage
of time or both) could constitute a Default by Tenant or default by the Master
Lessor under the Master Lease; (ii) the Master Lessor's agreement (a) to give
Sublessee copies of any written notice given to Sublessor of any default under
the Master Lease or events of which the Master Lessor has knowledge that (with
the giving of further notice or the passage of time or both) would constitute a
default under the Master Lease, at the same times and in the same manner as such
notices are given to Sublessor, and (b) to accept tender of payment or
performance by Sublessee to remedy any such default; (iii) a waiver of
subrogation in favor of Sublessee on and subject to the same terms and
conditions as are contained in Paragraph 8.6 of the Master Lease; (iv) the
Master Lessor's agreement to adhere to the same restrictions on entry into the
Premises imposed on Sublessor under Paragraph 9(e)(10) of this Sublease; and (v)
the Master Lessor's agreement that its consent to a sublet of the Premises or
assignment of this Sublease will not be required in connection with a subletting
or assignment described in Paragraph 16 of this Sublease.

   13.   Environmental Indemnities.
         -------------------------

   (a)   Neither Sublessee nor its agents, contractors, employees, invitees,
assignees or sublessees shall transport, store, use or dispose of any Hazardous
Materials in, on or about the Premises or Common Area without the prior written
consent of Sublessor, which Sublessor shall not unreasonably withhold so long as
Sublessee demonstrates to Sublessor's reasonable satisfaction that any such
Hazardous Materials are necessary or useful to Sublessee's business at the
Premises and will be brought upon the Premises, stored, used and/or disposed of
in compliance with all federal, state and local laws, rules, regulations,
ordinances, and other requirements applicable to any such Hazardous Materials.
Sublessee, in any event, at its sole cost and expense, shall comply with all
federal, state and local laws, rules, regulations, ordinances, and other
requirements applicable to Sublessee's transport, storage, use and/or disposal
of Hazardous Materials in, on or about the Premises, and Sublessee shall be
solely responsible for and shall indemnify, defend and hold harmless Sublessor
and the Master Lessor from and against any and all claims, costs, liabilities,
losses, damages, obligations and expenses, including without limitation
attorneys' fees, arising out of or resulting from Sublessee or its agents,
contractors, employees, invitees, assignees or sublessees transporting, storing,
using and/or disposing of or otherwise releasing Hazardous Materials in, on or
about the Premises or the Common Area. The foregoing indemnity shall include,
without limitation, all claims, costs, liabilities, losses, damages, obligations
and expenses, including attorneys' fees, arising out of or resulting from any
investigation, testing, monitoring, removal, cleanup, restoration and/or other
remedial work required by any federal, state, or local government agency or
political subdivision, required by reason of any action initiated by a private
party, or otherwise necessitated by reason of any use, storage, disposal or
release of Hazardous Materials in, on or around the Premises or the Common Area
by Sublessee or its agents, contractors, employees, invitees, assignees or
sublessees.

                                       9


 
          (b)  Sublessor represents and warrants to Sublessee that to the best 
of Sublessor's actual knowledge there are no Hazardous Materials present in, on 
or about the Premises or the Common Area as of February 1, 1993.  Sublessor 
shall be solely responsible for and shall indemnify, defend and hold harmless 
Sublessee from and against any and all claims, costs, liabilities, losses, 
damages, obligations and expenses, including without limitation attorneys' fees,
arising out of or resulting from a breach of the foregoing representation and 
warranty by Sublessor and/or any use, storage, disposal or release of Hazardous 
Materials by Sublessor or its agents in, on or about the Premises or the Common 
Area prior to the commencement of the Term of the Sublease.  Said indemnity 
shall include, without limitation, all claims, costs, liabilities, losses, 
damages, obligations and expenses, including attorneys' fees, arising out of or 
resulting from any investigation, testing, monitoring, removal, cleanup, 
restoration and/or other remedial work required by any federal, state or local 
government agency or political subdivision, required by reason of any action 
initiated by a private party, or otherwise necessitated by reason of any use, 
storage, disposal or release of Hazardous Materials in, on or around the 
Premises or the Common Area by Sublessor or its agents prior to the commencement
of the Term of the Sublease.

          (c) The term Hazardous Materials, as used herein, shall mean all
hazardous, toxic, and/or radioactive materials, substances, and wastes, and
shall include, without limitation, all materials, substances, and wastes,
defined as "hazardous substances", "hazardous materials", or "toxic substances"
in the Comprehensive Environmental Response, Compensation and Liability Act of
1980, as amended, 42 U.S.C. Section 9601, et seq, the Hazardous Materials
Transportation Act, 49 U.S.C. Section 1801, et seq, the Resource Conservation
and Recovery Act, 42 U.S.C. Section 6901, et seq, or those materials, substances
and wastes defined as "hazardous wastes" in Section 25117 of the California
Health & Safety Code or as "hazardous substances" in Section 25316 of the
California Health & Safety Code, petroleum and petroleum products, and any other
materials, substances or wastes defined as hazardous, toxic or radioactive in
any laws, regulations, statutes, ordinances or rules adopted or promulgated by
and federal, state or local government agency.

          (d)  Sublessee's and Sublessor's indemnity obligations under this 
Paragraph 13 shall survive the termination of this Sublease.  If at any time 
during or after the term of this Sublease Sublessor or Sublessee becomes aware 
of any inquiry, investigation, administrative proceeding, or judicial proceeding
by any governmental agency or any action by a private party regarding the 
presence of any Hazardous Materials in, on or about the Premises or the Common 
Area, such party shall, within five days after learning of such inquiry, 
investigation, proceeding, or action give the other party written notice 
advising Sublessor of same.

     14.  Commissions.  Sublessee represents and warrants to Sublessor that 
Sublessee has dealt with no broker in connection with this Sublease other than 
Cornish & Carey Commercial Real Estate, and Sublessor represents and warrants to
Sublessee that Sublessor has dealt with no broker in connection with this 
Sublease other than Grubb & Ellis Company Commercial Real Estate Services. 
Sublessor agrees to be liable for and to pay all real estate brokerage 
commissions earned by the aforementioned brokers in connection with this 
Sublease, and Sublessor understands and agrees that said commissions shall total
one and one half (1-1/2) times the commission payable to Grubb & Ellis pursuant 
to Sublessor's separate agreement with Grubb & Ellis, with Cornish & Carey 
receiving a commission equal to the full amount due under said separate 
agreement and Grubb & Ellis receiving a commission equal to one half of the full
amount due under said separate agreement.  Sublessor shall pay all amounts due 
to Grubb & Ellis

                                      10

 
(and Grubb & Ellis, in turn, shall be responsible for forwarding payment of its 
share to Cornish & Carey); provided, however, that anything in said separate 
agreement to the contrary notwithstanding such commissions shall be payable as 
follows: (i) fifty percent (50%) at such time as the conditions precedent in 
Paragraph 12 of this Sublease have been satisfied; and (ii) fifty percent (50%) 
upon the commencement of the Term of this Sublease. Sublessor and Sublessee 
each (as "Indemnitor") agree to indemnify, defend and hold harmless the other 
against and from any claims, demands, liabilities, costs and expenses, including
without limitation attorneys' fees, arising out of or resulting from a claim by 
any person or entity (other than Cornish & Carey and Grubb & Ellis) that it is 
entitled to a commission, finders fee or other compensation in connection with 
this Sublease transaction based on acts or omissions of the Indemnitor.

     15.  Entire Agreement.  There are no other agreements between Sublessor 
and Sublessee regarding the Premises, the Common Area or the Sublease, and this
Sublease supersedes and cancels any and all prior negotiations, arrangements,
agreements, representations, and understandings, whether oral or written,
between Sublessor and Sublessee or made by Sublessor or its agents to Sublessee
with respect to the subject matter of this Sublease. This Sublease constitutes
the entire agreement between the parties and may be amended or modified only by 
a written instrument signed by the parties.

     16.  Assignment and Subletting.  Notwithstanding anything to the contrary 
in this Sublease, Sublessee may, without Sublessor's prior written consent and 
without any participation by Sublessor in assignment or subletting proceeds, 
sublet the Premises or assign this Sublease to (i) a subsidiary, affiliate, 
division or corporation controlled by or under common control with Sublessee , 
(ii) a successor corporation related to Sublessee by merger, consolidation, 
non-bankruptcy reorganization or government action, or (iii) a purchaser of 
substantially all of the assets of Sublessee's division occupying the Premises; 
provided, however, that any such sublease or assignment shall not be construed 
to relieve Sublessee of its obligations under this Sublease.

     17.  Approvals.  Notwithstanding anything to the contrary in this Sublease,
whenever this Sublease expressly requires an approval or consent by Sublessor or
Sublessee, such approval or consent shall not be unreasonably withheld or 
delayed.

     18.  Communications with Master Lessor.  Sublessee agrees to provide to 
Sublessor (i) copies of any communications and/or other documentation given by
Sublessee to the Master Lessor, including without limitation any requests for
the Master Lessor's consent required under Paragraphs 9(e)(3) and (e)(8) of this
Sublease, at the same times and in the same manner that any such communications
and/or other documentation are submitted to the Master Lessor, and (ii) copies
of any communications received by Sublessee from the Master Lessor promptly upon
receipt thereof.

     IN WITNESS WHEREOF, the parties have executed this Lease as of the 22 day 
of February, 1993


SUBLESSOR:                                  SUBLESSEE:

General Signal Corporation                  Conner Peripherals, Inc.


    /s/                                         /s/ Carl W. Neun
By:_________________________                By:__________________________


   Its: VP & Treasurer                         Its: CFO
        --------------------                        ---------------------




                                      11

 












 
                                     INDEX
                                   NET LEASE

 
 
                                                                            Page
                                                                          
 1.  Summary of Lease Provisions ...........................................   1
                                                                             
 2.  Property Leased .......................................................   2
                                                                             
 3.  Term ..................................................................   2
                                                                             
 4.  Rent ..................................................................   3
                                                                             
 5.  Security Deposit ......................................................   3
                                                                             
 6.  Use of Premises .......................................................   3
                                                                             
 7.  Taxes .................................................................   4
                                                                             
 8.  Insurance; Indemnity; Waiver ..........................................   5
                                                                             
 9.  Utilities .............................................................   6
                                                                             
10.  Repairs and Maintenance ...............................................   6
                                                                             
11.  Common Area ...........................................................   6
                                                                             
12.  Operating Expenses ....................................................   7
                                                                             
13.  Alterations and Improvements ..........................................   7
                                                                             
14.  Default and Remedies ..................................................   7
                                                                             
15.  Damage or Destruction .................................................   8
                                                                             
16.  Condemnation ..........................................................   9
                                                                             
17.  Liens .................................................................   9
                                                                             
18.  Landlord's Right of Access to Premises ................................  10
                                                                             
19.  Landlord's Right to Perform Tenant's Covenants ........................  10
                                                                             
20.  Lender Requirements ...................................................  10
                                                                             
21.  Holding Over ..........................................................  11
                                                                             
22.  Notices ...............................................................  11
                                                                             
23.  Attorneys' Fees .......................................................  11
                                                                             
24.  Assignment, Subletting and Hypothecation ..............................  11
                                                                             
25.  Successors ............................................................  12
                                                                             
26.  Landlord Default; Mortgage Protection .................................  12
                                                                             
27.  Exhibits ..............................................................  13
                                                                             
28.  Surrender of Lease Not Merger .........................................  13
                                                                             
29.  Waiver ................................................................  13
                                                                             
30.  General ...............................................................  13
                                                                             
31.  Signs .................................................................  13
                                                                             
32.  Landlord as Party Defendant ...........................................  14
                                                                             
33.  Landlord Not a Trustee ................................................  14
                                                                             
34.  Interest ..............................................................  14
                                                                             
35.  Surrender of Premises .................................................  14
                                                                             
36.  No Partnership or Joint Venture .......................................  14
                                                                             
37.  Entire Agreement ......................................................  14
                                                                             
38.  Submission of Lease ...................................................  14
                                                                             
39.  Quiet Enjoyment .......................................................  14
                                                                             
40.  Authority .............................................................  14
                                                                             
41.  Building Plans ........................................................  14
                                                                             
42.  Addendum ..............................................................  14
                                                                             
43.  Option to Extend Lease Term ...........................................  15
                                                                             
44.  Rent During Extended Term .............................................  15
                                                                             
45.  Moving Costs ..........................................................  17
                                                                             
46.  Existing Leases .......................................................  17
                                                                             
47.  Right of First Refusal ................................................  17
                                                                             
48.  Right of First Negotiation - Expansion Building .......................  18
                                                                             
49.  Condition of Title ....................................................  18
                                                                             
50.  Environmental Compliance ..............................................  18
 
                           
                           Exhibit "X" to Sublease

                                     12

 
                              NET LEASE AGREEMENT

1. SUMMARY OF LEASE PROVISIONS For and in consideration of the rentals,
covenants, and conditions hereinafter set forth, Landlord hereby leases to
Tenant, and Tenant hereby rents from Landlord, the herein described Premises for
the term, at the rental and subject to and upon all of the terms, covenants and
agreements set forth in this Net Lease Agreement, including Landlord's right to
recover the Premises pursuant to Paragraph 24 below ("Lease"):

  1.1   Tenant:  TELECOMMUNICATIONS TECHNOLOGY, INC., a Delaware
                ----------------------------------------------------------------
                   corporation
          ___________________________________________________________("Tenant").
  1.2   Landlord: CAMSI II, a California general partnership
                  --------------------------------------------------------------
        ___________________________________________________________("Landlord").
  1.3   Date of Lease, for reference purposes only:    December 20,   19 85
                                                    _________________   _______.
  1.4   Premises: That certain building located in the city of  Milpitas
                                                               ________________,
        County of Santa Clara  State of California, shown cross-hatched on the
                  ___________,        
        site plan attached hereto as Exhibit "A", and commonly referred to as
        185 So. Milpitas Boulevard
        __________________________, _________________ together with certain 
        rights appurtenant thereto. (Paragraph 2.1)
  1.5   Term:    Ten (10) years                                    (Paragraph 3)
              -----------------------------------------------------
  1.6   Commencement Date:  May 1, 1986                subject to the provisions
                           --------------------------,
        of Paragraph 3 below. (Paragraph 3)
  1.7   Ending Date:        April 30, 1996              unless sooner terminated
                     _________________________________,
        pursuant to the terms of this Lease, subject to extension pursuant to 
        Paragraph 43.

  1.8   Rent: (Paragraph 4) Period                  Monthly Amount
                            ------                  --------------
                  5/1/86 - 4/30/97                       -0-
                  5/1/87 - 4/30/92                   $60,988
                  5/1/92 - 4/30/93                   $64,076
                  5/1/93 - 4/30/94                   $67,936
                  5/1/94 - 4/30/96                   $76,428



        Subject to adjustment pursuant to Paragraph 2(e) of the Improvement 
        Agreement attached as Exhibit "C" hereto.
        
        
        Receipt of the first month's Rent is hereby acknowledged by Landlord.

  1.9   Use of Premises:  electronic research and development, assembly,
                         -------------------------------------------------------
        manufacturing, and warehousing and related office use      (Paragraph 6)
        -----------------------------------------------------------
  1.10  Security Deposit:  none
                          ------------------------------------------------------
        -----------------------------------------------------------(Paragraph 5)
  1.11  Addresses for Notices:
        To Landlord. CAMSI II
                     -----------------------------------------------------------
                     P. O. Box 4360
                     -----------------------------------------------------------
                     Santa Clara, CA 95054
                     -----------------------------------------------------------
        To Tenant.   To the Premises, with a courtesy copy to:
                     General Signal Corporation (Guarantor)
                     -----------------------------------------------------------
                     High Ridge Park
                     -----------------------------------------------------------
                     Stamford, Connecticut 06904 Attention: General Counsel
                     -----------------------------------------------------------
  1.12  Exclusive Right to Use No More than Two hundred Ninety-Three   ( 293   )
                                            --------------------------  -------
        parking spaces within the Common Area. (Paragraph 2.1)

  1.13 SUMMARY PROVISIONS IN GENERAL. Parenthetical references in this Paragraph
  1 to other paragraphs in this Lease are for convenience of reference, and 
  designate some of the other Lease paragraphs where applicable provisions are 
  set forth. All of the terms and conditions of each such referenced paragraph 
  shall be construed to be incorporated within and made a part of each of the 
  above referring Summary of Lease Provisions. In the event of any conflict 
  between any Summary of Lease Provision as set forth above and the balance of 
  the Lease, the latter shall control.

                                     13

 
2. PROPERTY LEASED
2.1 PREMISES. Landlord hereby leases to Tenant and Tenant hereby leases from 
Landlord, upon the terms and conditions herein set forth, that certain building 
("Premises") referred to in Paragraph 1.4 above, shown cross-hatched on the site
plan attached hereto as Exhibit "A". In addition, Tenant shall have the 
following rights with respect to the real property more particularly described 
in the legal description attached as Exhibit "B" hereto (if applicable) and 
outlined in red on Exhibit "A" ("Common Area"): (i) the exclusive right to use 
no more than the number of parking spaces set forth in Paragraph 1.12 above, as
shown on Exhibit "A", the location of which may be redesignated from time to 
time by Landlord; and (ii) such other rights as are necessary and convenient to 
Tenant's possession of the Premises or performance of Tenant's obligations under
this Lease. (Notwithstanding the number of parking spaces designated for 
Tenant's exclusive use, in the event by reason of any rule, regulation, order, 
law, statute or ordinance of any governmental or quasi-governmental authority 
relating to or affecting parking on the Common Area, or any other cause beyond 
Landlord's reasonable control, Landlord is required to reduce the number of 
parking spaces on the Common Area. Landlord shall have the right to 
proportionately reduce the number of parking spaces designated herein for 
Tenant's exclusive use.) In addition, Landlord grants to Tenant a non-exclusive 
easement for vehicular ingress and egress in and over the paved roadways in the 
Common Area and pedestrian ingress and egress in and over the Common Area.
(*See attached Page 2-A.)

2.2 IMPROVEMENTS. The improvements to be constructed by Landlord for Tenant's 
use in the Premises are set forth in detail on the attached Exhibit "C". In the 
event of changes to any of the work set forth in Exhibit "C" (whether such 
changes are required by any public agency, or by reason of any error or omission
in plans because of information provided to Landlord by Tenant, or because
requested in writing by Tenant and accepted in writing by Landlord), Tenant
shall pay to Landlord, Landlord's costs related to such changes before work in
regard to such changes is commenced; provided, however, in no event shall
Landlord's failure to demand such payment before commencement of work in regard
to such changes, or Tenant's failure to pay for the same before commencement of
work in regard to such changes be deemed to be a waiver of Landlord's right to
require or enforce collection of such payment for changes at any time
thereafter. Landlord's costs related to the changes shall include, without
limitation, all architectural, contractor, and engineering expenses, and the
cost of all building and other permits and inspection fees. Tenant acknowledges
that Landlord or a person or entity related to Landlord and/or controlled by
Landlord may serve as Landlord's architect, engineer and/or contractor in regard
to the above-described work and in the event of any changes, Landlord's costs
shall be deemed to include architect, engineering and/or contractor expenses at
the rates charged to third parties by Landlord and/or such related person or
entity for such services, when performed independently of any lease agreement.
Since any construction work on the Premises by Tenant prior to substantial
completion of the work required of Landlord pursuant to this Paragraph 2.2 may
interfere with the work required of Landlord or with Landlord's ability to
obtain a Certificate of Occupancy therefor, any such work by Tenant shall be
subject to the provisions of Paragraph 13.1 hereof, and Landlord may withhold
its consent to any such work by Tenant, provided that such consent is not
unreasonably withheld. It shall not be deemed unreasonable for Landlord to
withhold its consent if Tenant proposes to use non-union labor.

2.3 ACCEPTANCE OF PREMISES. By taking possession of the Premises, Tenant shall
be deemed to have accepted the Premises as being in good and sanitary order,
condition and repair and to have accepted the Premises in their condition
existing as of the date Tenant takes possession of the Premises, subject to all
applicable laws, covenants, conditions, restrictions, easements and other
matters of public record and the rules and regulations from time to time
promulgated by Landlord governing the use of the Premises, and Common Area, and
further, to have accepted tenant improvements to be constructed by Landlord (if
any) as being completed in accordance with the plans and specifications for such
improvements, subject only to completion of items on Landlord's punch list.
(**See attached Page 2-A.) Tenant acknowledges that neither Landlord nor
Landlord's agents have made any representation or warranty as to the suitability
of the Premises for the conduct of Tenant's business, the condition of the
Premises, or the use or occupancy which may be made thereof and Tenant has
independently investigated and is satisfied that the Premises are suitable for
Tenant's intended use and that the Premises meets all governmental requirements
for such intended use.
 
3. TERM
3.1 COMMENCEMENT DATE. The term of this Lease ("Lease Term") shall be for the
period specified in Paragraph 1.5 above, commencing on the date set forth in
Paragraph 1.6 ("Commencement Date"); provided, however, in the event any
improvements to be constructed by Landlord, as set forth on Exhibit "C" are not
completed by the aforesaid Commencement Date or are completed prior to such
Commencement Date, then the Commencement Date shall be deemed to be the date on
which the improvements to be constructed by Landlord are substantially
completed. (***Time is of the essence.) Such improvements shall be deemed to be
substantially completed upon the occurrence of the earlier of the following:

  (a) The date on which all improvements to be constructed by Landlord have been
  substantially completed except for: (i) punch list items which do not prevent
  Tenant from using the Premises for its intended use; (ii) such work as
  Landlord is required to perform but which is delayed because of fault or
  neglect of Tenant, acts of Tenant or Tenant's agents (including without
  limitation delays caused by work done on the Premises by Tenant or Tenant's
  agents or by acts of Tenant's contractors or subcontractors) or delays caused
  by change orders requested by Tenant or required because of any errors or
  omissions in plans submitted by Tenant; and (iii) such work as Landlord is
  required to perform but cannot complete until Tenant performs necessary
  portions of construction work it has elected or is required to do; or

  (b) The issuance of appropriate governmental approvals for occupancy of the 
  Premises; or

  (c) The date Tenant opens for business in the Premises.

If the Commencement Date is a date other than the date set forth in Paragraph 
1.6, then the Ending Date set forth in Paragraph 1.7, the rental adjustment 
dates set forth in Paragraph 1.8 and any other dates certain specified herein 
shall be adjusted accordingly. When the Commencement Date, Ending Date, rental 
adjustment dates, and such other dates become ascertainable, Landlord and Tenant
shall specify the same in writing, in the form of the attached Exhibit "D", 
which writing shall be deemed incorporated herein. Tenant's failure to execute 
and deliver the letter attached hereto as Exhibit "D" shall be a Default by 
Tenant hereunder. The expiration of the Lease Term or sooner termination of this
Lease is referred to herein as the "Lease Termination".

3.2 DELAY OF COMMENCEMENT DATE. Landlord shall not be liable for any damage or
loss incurred by Tenant for Landlord's failure for whatever cause to deliver
possession of the Premises by any particular date (including the Commencement
Date), nor shall this Lease be void or voidable on account of such failure to
deliver possession of the Premises; provided that if Landlord does not deliver
possession of the Premises to Tenant by the date which is thirty (30) days from
the date as set forth in Paragraph 1.6 above. Tenant shall have the right to
terminate this Lease by written notice delivered to Landlord within five (5)
days thereafter, and Landlord and Tenant shall be relieved of their respective
obligations hereunder; provided further that said thirty (30) day period shall
be extended by the number of days work on the Premises is delayed due to fault
or neglect of Tenant, acts of Tenant or Tenant's agents, or due to acts of God,
labor disputes, strikes, fires, rainy or stormy weather, acts or failures to act
of public agencies, inability to obtain labor or materials, earthquake, war,
insurrection, riots and other causes beyond Landlord's reasonable control.

3.3 EARLY OCCUPANCY. If Tenant takes possession of the Premises prior to the 
Commencement Date, Tenant shall do so subject to all of the terms and conditions
hereof and shall pay the Rentals provided for herein.

3.4 TENANT TO PHYSICALLY OCCUPY PREMISES. Tenant shall, no later than thirty 
(30) days after the Commencement Date, go into actual physical occupancy of the 
Premises and open the Premises for business in accordance with the uses 
specified in Paragraph 6 below; provided, however, the date of Tenant's physical
occupancy of the Premises shall in no event extend the Commencement Date, the 
Lease Termination date or the date the payment of Rentals hereunder commences. 
Time is of the essence.

                                     14


                                  PAGE 2-A
 
2.1     *Except for the right of Landlord to enter upon and use the Common Area 
as may be necessary for the performance of Landlord's obligations hereunder,
Tenant shall have the exclusive right to use the Common Area. The foregoing
notwithstanding, Tenant's rights to use that portion of the Common Area marked
by dashed lines on Exhibit "A" shall be subject to the terms and conditions of
that certain Deed from Beatrice C. Wrigley to the City and County of San
Francisco dated October 31, 1949, and recorded November 14, 1949 Book 1875 Page
312 of the Official Records, Santa Clara County and that certain San Francisco
Water Department Land Use Permit by and between the City and County of San
Francisco and Landlord, dated June 21, 1984 and recorded July 3, 1984 at Book I
692 Pages 502-509 of the Official Records, Santa Clara County.





2.3     **Tenant shall be a beneficiary of all warranties received by Landlord 
from contractors and subcontractors performing work on the Premises.  Landlord 
represents to Tenant that it has received or will receive the following 
warranties from its contractors and subcontractors in connection with
construction of the Premises and the Improvements:

     (a)  With respect to the Building shell, a one (1) year warranty from date 
of completion (May 9, 1985) (parts and labor) with respect to defects in 
construction.

     (b)  With respect to the interim improvements, a one (1) year warranty from
date of completion (parts and labor) with respect to defects in construction.

                                     15

 
    4. RENT

    4.1 RENT. Tenant shall pay to Landlord as rent for the Premises ("Rent"), 
    in advance, on the first day of each calendar month, commencing on the date 
    specified in Paragraph 1.8 and continuing throughout the Lease Term (until 
    adjusted pursuant to Paragraph 4.4. below) the Rent set forth in Paragraph
    1.8 above. Rent shall be prorated, based on thirty days per month, for any
    partial month during the Lease Term. Rent shall be payable without
    deduction, offset, prior notice or demand in lawful money of the United
    States to Landlord at the address herein specified for purposes of notice
    or to such other persons or such other places as Landlord may designate in
    writing.

    4.2 LATE CHARGE. Tenant hereby acknowledges that late payment by Tenant to
    Landlord of Rent will cause Landlord to incur costs not contemplated by
    this Lease, the exact amount of which will be extremely difficult to
    ascertain. Such costs include, but are not limited to, processing and
    accounting charges, and late charges which may be imposed on Landlord by the
    terms of any mortgage or deed of trust covering the Premises. Accordingly,
    Tenant shall pay to Landlord, as additional rent (as defined in paragraph
    4.3 below), without the necessity of prior notice or demand, a late charge
    equal to ten percent (10%) of any installment of Rent which is not received
    by Landlord within ten (10) days after the due date for such installment.
    The parties hereby agree that such late charge represents a fair and
    reasonable estimate of the costs Landlord will incur by reason of late
    payment by Tenant. In no event shall this provision for a late charge
    be deemed to grant to Tenant a grace period or extension of
    time within which to pay any installment of Rent or prevent Landlord
    from exercising any right or remedy available to Landlord upon Tenant's
    failure to pay such installment of Rent when due, including without
    limitation the right to terminate this Lease. In the event any installment
    of Rent is not received by Landlord by the thirtieth (30th) day after the
    due date for such installment, such installment shall bear interest at the
    annual rate set forth in Paragraph 34 below, commencing on the thirty-first
    (31st) day after the due date for such installment and continuing until such
    installment is paid in full.

    4.3 ADDITIONAL RENT. All taxes, charges, costs and expenses and other sums
    which Tenant is required to pay hereunder (together with all interest and
    charges that may accrue thereon in the event of Tenant's failure to pay the
    same), and all damages, costs and expenses which Landlord may incur by
    reason of any Default by Tenant shall be deemed to be additional Rent
    hereunder ("Additional Rent"). Additional Rent shall accrue commencing on
    the Commencement Date. In the event of nonpayment by Tenant of any
    Additional Rent, Landlord shall have all the rights and remedies with
    respect thereto as Landlord has for the nonpayment of Rent. The term
    "Rentals" as used in the Lease shall mean Rent and Additional Rent.

    5. SECURITY DEPOSIT - n/a.

    6. USE OF PREMISES

    6.1 PERMITTED USES. Tenant shall use the Premises and the Common Area only
    in conformance with applicable governmental laws, regulations, rules and
    ordinances for the purposes set forth in Paragraph 1.9 above, and for no
    other purpose without the prior written consent of Landlord, which consent
    Landlord will not unreasonably withhold. Any change in use of the Premises
    or the Common Area without the prior written consent of Landlord shall be a
    Default by Tenant. Tenant and Tenant's agents shall comply with the
    provisions of the existing Declaration of Covenants, Conditions, and
    Restrictions affecting the Premises and the Common Area. Said Declaration of
    Covenants, Conditions, and Restrictions shall not be modified without the
    consent of Tenant, which consent shall not be unreasonably withheld.

    6.2 TENANT TO COMPLY WITH LEGAL REQUIREMENTS. Tenant shall, at its sole
    cost, promptly comply with all laws, statutes, ordinances, rules,
    regulations, orders or requirements of all municipal, county, state and
    federal authorities and all quasi-governmental authorities relating to or
    affecting the use, occupational safety, occupancy or condition of the
    Premises or the Common Area, now in force, or which may hereafter be in
    force, including without limitation any of the foregoing relating to utility
    usage and load or number of permissible occupants or users of the Premises,
    whether or not the same are now contemplated by the parties; with the
    provisions of all recorded documents affecting the Premises or the Common
    Area insofar as the same relate to or affect the use, occupational safety,
    occupancy, or condition of the Premises or the Common Area; and with the
    requirements of any board of fire underwriters (or similar body now or
    hereafter constituted) relating to or affecting the use, occupational
    safety, occupancy or condition of the Premises or the Common Area. Tenant's
    obligations pursuant to this Paragraph 6.2 shall include without limitation
    maintaining or restoring the Premises or the Common Area and making
    structural and non-structural alterations and additions in compliance and
    conformity with all laws and recorded documents relating to the use,
    occupational safety, occupancy or condition of the Premises or the Common
    Area during the Lease Term; provided, however, that Landlord shall make any
    alteration or addition required to bring the Premises or the Common Area
    into compliance with legal requirements in effect at the time the Premises,
    any improvements installed therein by Landlord, or the Common Area,
    respectively, were originally constructed. At Landlord's option, Landlord
    may make the required alteration, addition or change, and Tenant shall pay
    the cost thereof as Additional Rent. With respect to any alterations or
    additions as may be hereafter required due to a change in laws and

                                     16


 
unrelated to Tenant's specific use of the Premises or the Common Area. Tenant 
shall be required to pay a pro rata portion of the cost thereof, which amount 
shall be determined by multiplying the total cost by a fraction, the numerator 
of which is the number of months remaining in the Lease Term at the time of the 
alteration or addition, and the denominator of which is the number of months in 
the useful life of the alteration or addition. Tenant shall obtain prior to 
taking possession of the Premises any permits, licenses or other authorizations 
required for the lawful operation of its business at the Premises. The judgment 
of any court of competent jurisdiction or the admission of Tenant in any action 
or proceeding against Tenant, regardless of whether Landlord be a party thereto 
or not, that Tenant has violated such ordinance, regulation, rule, requirement, 
recorded document or statute relating to the use, occupational safety, occupancy
or condition of the Premises or the Common Area shall be conclusive of the fact
of such violation by Tenant. Any alterations or additions undertaken by Tenant
pursuant to this Paragraph 6.2 shall be subject to the requirements of Paragraph
13.1 below.

6.3 PROHIBITED USES. Tenant and Tenant's agents shall not commit or suffer to be
committed any waste upon the Premises. Tenant and Tenant's agents shall not do 
or permit anything to be done in or about the Premises or Common Area which will
in any way obstruct or interfere with the rights of any authorized users of the
Common Area or occupants of neighboring property, or injure or annoy them. 
Tenant shall not conduct or permit any auction or sale open to the public to be 
held or conducted on or about the Premises or Common Area. Tenant and Tenant's 
agents shall not use or allow the Premises to be used for any unlawful, immoral 
or hazardous purpose or any purpose not permitted by this Lease, nor shall 
Tenant or Tenant's agents cause, maintain, or permit any nuisance in, on or 
about the Premises. Tenant and Tenant's agents shall not do or permit anything 
to be done in or about the Premises or Common Area nor bring or keep anything in
the Premises or Common Area which will in any way increase the rate of any 
insurance upon the Premises or Common Area or any part thereof or any of its 
contents, or cause a cancellation of any insurance policy covering the Premises 
or Common Area or any part thereof or any of its contents, nor shall Tenant or 
Tenant's agents keep, use or sell or permit to be kept, used or sold in or about
the Premises any articles which may be prohibited by a standard form policy of 
fire insurance. In the event the rate of any insurance upon the Premises or 
Common Area or any part thereof or any of its contents is increased because of 
the acts or omissions of Tenant or Tenant's agents, Tenant shall pay, as 
Additional Rent, the full cost of such increase; provided, however this 
provision shall in no event be deemed to constitute a waiver of Landlord's right
to declare a default hereunder by reason of such increase or of any other rights
or remedies of Landlord in connection with such increase. Tenant and Tenant's 
agents shall not place any loads upon the floor, walls or ceiling of the 
Premises which would endanger the Premises or the structural elements thereof, 
nor place any harmful liquids in the drainage system of the Premises. No waste 
materials or refuse shall be dumped upon or permitted to remain upon any part of
the Premises or Common Area except in enclosed trash containers. No materials, 
supplies, equipment, finished products (or semi-finished products), raw 
materials, or other articles of any nature shall be stored upon, or be permitted
to remain on, any portion of the Common Area.

Tenant shall not allow any activity which in the reasonable opinion of Landlord
is detrimental to the operation of the Common Area or to tenants of Landlord in
other buildings located on the Common Area or upon real property owned by
Landlord adjacent to the Common Area, including but not limited to any
picketing, work stoppage, or other concerted activity. Landlord shall have the
right to require Tenant, at Tenant's own expense and within a reasonable period
of time, to use Tenant's best efforts to terminate or control any such
picketing, work stoppage or other concerted activity to the extent necessary to
eliminate any interference with the operation of the Common Area or such
tenants. Failure by Tenant to use its best efforts to do so shall be a Default
by Tenant. Nothing contained in this paragraph shall be construed as placing
Landlord in an employer-employee relationship with any of Tenant's employees or
with any other employees who may be involved in such activity.

7.  TAXES

7.1  PERSONAL PROPERTY TAXES. Tenant shall cause Tenant's trade fixtures, 
equipment, furnishings, furniture, merchandise, inventory, machinery, appliances
and other personal property installed or located on the Premises (collectively 
the "personal property") to be assessed and billed separately from the Premises.
Tenant shall pay before delinquency any and all taxes, assessments and public 
charges levied, assessed or imposed upon or against Tenant's personal property. 
If any of Tenant's personal property shall be assessed with the real property 
comprising the Common Area or with the Premises. Tenant shall pay to Landlord, 
as Additional Rent, the amounts attributable to Tenant's personal property 
within ten (10) days after receipt of a written statement from Landlord setting 
forth the amount of such taxes, assessments and public charges attributable to 
Tenant's personal property. Tenant shall comply with the provisions of any law, 
ordinance, rule or regulation of taxing authorities which require Tenant to file
a report of Tenant's personal property located on the Premises.

7.2 OTHER TAXES PAYABLE SEPARATELY BY TENANT. Tenant shall pay (or reimburse 
Landlord, as Additional Rent, if Landlord is assessed), prior to delinquency or 
within ten (10) days after receipt of Landlord's statement thereof, any and all 
taxes, levies, assessments or surcharges payable by Landlord or Tenant (other 
than Landlord's net income, succession, transfer, gift, franchise, estate or 
inheritance taxes, and Taxes, as that term is defined in Paragraph 7.3(a) below,
payable as an Operating Expense), whether or not now customary or within the 
contemplation of the parties hereto, whether or not now in force or which may 
hereafter become effective, including but not limited to taxes:

  (a) Upon, allocable to, or measured by the area of the Premises or the Rentals
payable hereunder, including without limitation any gross income, gross 
receipts, excise, or other tax levied by the state, any political subdivision 
thereof, city or federal government with respect to the receipt of such Rentals;

  (b) Upon or with respect to the use, possession, occupancy, leasing, operation
and management of the Premises or any portion thereof;

  (c) Upon this transaction or any document to which Tenant is a party creating 
or transferring an interest or an estate in the Premises; or 

  (d) Imposed as a means of controlling or abating environmental pollution or 
the use of energy, including, without limitation, any parking taxes, levies or 
charges or vehicular regulations imposed by any governmental agency. Tenant 
shall also pay, prior to delinquency, all privilege, sales, excise, use, 
business, occupation, or other taxes, assessments, license fees, or charges 
levied, assessed or imposed upon Tenant's business operations conducted at the 
Premises.

In the event any such taxes are payable by Landlord and it shall not be lawful 
for Tenant to reimburse Landlord for such taxes, then the Rentals payable 
hereunder shall be increased to net Landlord the same net Rental after 
imposition of any such tax upon Landlord as would have been payable to Landlord 
prior to the imposition of any such tax.

7.3 COMMON TAXES.

   (a) DEFINITION OF TAXES. The term "Taxes" as used in this Lease shall 
collectively mean (to the extent any of the following are not paid by Tenant 
pursuant to Paragraphs 7.1 and 7.2 above) all real estate taxes; personal 
property taxes; taxes based on vehicles utilizing parking areas on the Common 
Area; taxes computed or based on rental income or on the square footage of the 
Premises (including without limitation any municipal business tax but excluding 
federal, state and municipal net income taxes); environmental surcharges; excise
taxes; gross receipts taxes; sales and/or use taxes; employee taxes; water and 
sewer taxes, levies, assessments and other charges in the nature of taxes or 
assessments (including, but not limited to, assessments for public improvements 
or benefit), but excluding assessments existing as of the Date of Lease set 
forth in Paragraph 1.3, and all other governmental, quasi-governmental or 
special district impositions of any kind and nature whatsoever, regardless of 
whether now customary or within the contemplation of the parties hereto and 
regardless of whether resulting from increased rate and/or valuation, or whether
extraordinary or ordinary, general or special, unforeseen or foreseen, or 
similar or dissimilar to any of the foregoing and which during the Lease Term 
are laid, levied, assessed or imposed upon Landlord and/or become a lien upon 
or chargeable against the Premises and/or Common Area under or by virtue of any 
present or future laws, statutes, ordinances, regulations, or other requirements
of any governmental, quasi-governmental or special district authority 
whatsoever. The term "environmental surcharges'' shall include any and all 
expenses, taxes, charges or penalties imposed by the Federal Department of 
Energy, Federal Environmental Protection Agency, the Federal Clean Air Act, or 
any regulations promulgated thereunder, or imposed by any other local, state or 
federal governmental agency or entity now or hereafter vested with the power to 
impose taxes, assessments or other types of surcharges as a means of controlling
or abating 

                                     17

 
environmental pollution or the use of energy in regard to the use, operation or 
occupancy of the Premises and/or the Common Area. The term "Taxes" shall include
(to the extent the same are not paid by Tenant pursuant to Paragraphs 7.1 and 
7.2 above), without limitation, all taxes, assessments, levies, fees, 
impositions or charges levied, imposed, assessed, measured, or based in any 
manner whatsoever upon or with respect to the use, possession, occupancy, 
leasing, operation or management of the Premises and/or Common Area or in lieu 
of or equivalent to any Taxes set forth in this Paragraph 7.3(a). In the event 
any such taxes are payable by Landlord and it shall not be lawful for Tenant to 
reimburse Landlord for such taxes, then the Rentals payable hereunder shall be 
increased to net Landlord the same net Rental after imposition of any such tax 
upon Landlord as would have been payable to Landlord prior to the imposition of 
any such tax.

(b) OPERATING EXPENSE. All Taxes which are levied or assessed or which become a 
lien upon the Premises and/or Common Area or which become due or accrue during 
the Lease Term shall be an Operating Expense, and Tenant shall pay as Additional
Rent each month during the Lease Term 1/12th of such Taxes, based on Landlord's 
estimate thereof, pursuant to Paragraph 12 below. Taxes during any partial tax 
fiscal year(s) within the Lease Term shall be prorated according to the ratio 
which the number of days during the Lease Term or of actual occupancy of the 
Premises by Tenant, whichever is greater, during such year bears to 365.

8. INSURANCE; INDEMNITY; WAIVER

8.1 INSURANCE BY LANDLORD.

(a) Landlord shall, during the Lease Term, procure and keep in force the
following insurance, the cost of which shall be an Operating Expense, payable by
tenant pursuant to Paragraph 12 below:

    (i) Property Insurance. "All risk" property insurance, including, without
    limitation, coverage for earthquake and flood; boiler and machinery (if
    applicable); sprinkler damage; vandalism; malicious mischief; full coverage
    plate glass insurance; and demolition. Increased cost of construction and
    contingent liability from change in building laws on the Premises and Common
    Area, including any improvements or fixtures constructed or installed on the
    Premises and Common Area by Landlord. Such insurance shall be in the full
    amount of the replacement cost of the foregoing, with reasonable deductible
    amounts, which deductible amounts shall be an Operating Expense, payable by
    Tenant pursuant to Paragraph 12. Such insurance shall also include rental
    income insurance, insuring that one hundred percent (100%) of the Rentals
    (as the same may be adjusted hereunder) will be paid to Landlord for a
    period of up to twelve (12) months if the Premises are destroyed or damaged,
    as may be required by any beneficiary of a deed of trust or any mortgagee of
    any mortgage affecting the Premises. Such insurance shall not cover any
    leasehold improvements installed in the Premises by Tenant at its expense,
    or Tenant's equipment, trade fixtures, inventory, fixtures or personal
    property located on or in the Premises; and

    (ii) Other. Such other insurance as Landlord deems necessary and prudent.

8.2 INSURANCE BY TENANT. Tenant shall, during the Lease Term, at Tenant's sole 
cost and expense, procure and keep in force the following insurance:

  (a) n/a.
  
  (b) LIABILITY INSURANCE. Comprehensive general liability insurance for the
  mutual benefit of Landlord and Tenant, against any and all claims for personal
  injury, death or property damage occurring in, or about the Premises and
  Common Area (and Tenant's operations on the Premises), or arising out of
  Tenant's or Tenant's agents' use of the Common Area or use or occupancy of the
  Premises. Such insurance shall have a combined single limit of not less than
  Three Million Dollars ($3,000,000). Such insurance shall contain a cross-
  liability (severability of interests) clause and an extended liability
  endorsement, including blanket contractual coverage. The minimum limits
  specified above are the minimum amounts required by Landlord, and may be
  revised by Landlord from time to time to meet changed circumstances, including
  without limitation to reflect (i) changes in the purchasing power of the
  dollar, (ii) changes indicated by the amount of plaintiffs' verdicts in
  personal injury actions in the State of California, or (iii) changes
  consistent with the standards required by other landlords in the county in
  which the Premises are located. Such liability insurance shall be primary and
  not contributing to any insurance available to Landlord, and Landlord's
  insurance (if any) shall be in excess thereto. As long as General Signal
  Corporation, a New York corporation ("General Signal"), is the guarantor of
  Tenant's obligations hereunder, the minimum amounts of insurance required by
  Landlord shall not exceed the amount of coverage carried by General Signal for
  itself and its subsidiaries, which shall in no event be less than Three
  Million Dollars ($3,000,000).

  (c) OTHER. Such other insurance as required by law, including, without
  limitation, workers' compensation insurance.

  (d) FORM OF THE POLICIES. The policies required to be maintained by Tenant
  pursuant to Paragraphs 8.2(a), (b), and (c) above shall be with companies, on
  forms, with deductible amounts (if any), and loss payable clauses reasonably
  satisfactory to Landlord, shall include Landlord and the beneficiary or
  mortgagee of any deed of trust or mortgage encumbering the Premises and/or the
  real property comprising the Common Area as additional insureds, and shall
  provide that such parties may, although additional insureds, recover for any
  loss suffered by Tenant's negligence. Certified copies of policies or
  certificates of insurance shall be delivered to Landlord prior to the
  Commencement Date; a new policy or certificate shall be delivered to Landlord
  at least thirty (30) days prior to the expiration date of the old policy.
  Tenant shall have the right to provide insurance coverage which it is
  obligated to carry pursuant to the terms hereof in a blanket policy, provided
  such blanket policy expressly affords coverage to the Premises and to Tenant
  as required by this Lease. Tenant shall obtain a written obligation on the
  part of Tenant's insurer(s) to notify Landlord and any beneficiary or
  mortgagee of a deed of trust or mortgage encumbering the Premises and/or the
  real property comprising the Common Area in writing of any delinquency in
  premium payments and at least thirty (30) days prior to any cancellation or
  modification of any policy. It is contemplated by the parties that the
  insurance required pursuant to this Paragraph 8.2 shall be procured and
  maintained by General Signal for itself and its subsidiaries.

8.3 FAILURE BY TENANT TO OBTAIN INSURANCE. If Tenant does not take out the
insurance required pursuant to Paragraph 8.2 or keep the same in full force and
effect, Landlord may, but shall not be obligated to, take out the necessary
insurance and pay the premium therefor, and Tenant shall repay to Landlord, as
Additional Rent, the amount so paid promptly upon demand. In addition, Landlord
may recover from Tenant and Tenant agrees to pay, as Additional Rent, any and
all reasonable expenses (including attorneys' fees) and damages which Landlord
may sustain by reason of the failure of Tenant to obtain and maintain such
insurance, it being expressly declared that the expenses and damages of Landlord
shall not be limited to the amount of the premiums thereon.

8.4 INDEMNIFICATION. Tenant shall indemnify, hold harmless, and defend Landlord 
(except for Landlord's negligence or willful misconduct) against all 
claims, losses or liabilities for injury or death to any person or for damage to
or loss of use of any property arising out of any occurrence in, on or about the
Premises or Common Area, if caused or contributed to by Tenant or Tenant's 
agents, or arising out of any occurrence in, upon or at the Premises or on 
account of the use, condition, occupational safety or occupancy of the Premises.
Such indemnification shall include and apply to attorneys' fees, investigation 
costs, and other costs actually incurred by Landlord. Tenant shall further 
indemnify, defend and hold harmless Landlord from and against any and all claims
arising from any breach or default in the performance of any obligation on 
Tenant's part to be performed under the terms of this Lease. The provisions of 
this Paragraph 8.4 shall survive Lease Termination with respect to any damage, 
injury, death, breach or default occurring prior to such termination. This Lease
is made on the express condition that Landlord shall not be liable for, or 
suffer loss by reason of, injury to person or property, from whatever cause, in 
any way connected with the condition, use, occupational safety or occupancy of 
the Premises specifically including, without limitation, any liability for
injury to the person or property of Tenant or Tenant's agents. The provisions of
this Paragraph 8.4 shall not apply to any damage or injury caused by Landlord's
willful misconduct or negligence.

                                      18


 
8.5 CLAIMS BY TENANT. Landlord shall not be liable to Tenant, and Tenant waives
all claims against Landlord, for injury or death to any person, damage to any
property, or loss of use of any Property in the Premises or Common Area by and
from all causes, including without limitation, any defect in the Premises or
Common Area and/or any damage or injury resulting from fire, steam, electricity,
gas, water or rain, which may leak or flow from or into any part of the
Premises, or from breakage, leakage, obstruction or other defects of pipes,
sprinklers, wires, appliances, plumbing, air conditioning or lighting fixtures,
whether the damage or injury results from conditions arising upon the Premises
or Common Area or from other sources. Landlord shall not be liable for any
damamges arising from any act or neglect of any other user of the Common Area.
Tenant or Tenant's agents shall promptly notify the Landlord in writing of any
known defect in the Premises or Common Area. The provisions of this Paragraph
8.5 shall not apply to any damage or injury caused by the Landlord's willful
misconduct or negligence.

8.6 MUTUAL WAIVER OF SUBROGATION. Landlord hereby releases Tenant, and Tenant
hereby releases Landlord, and their respective officers, agents, employees and
servants, from any and all claims or demands of damages, loss, expense or injury
to the Premises or the Common Area, or to the furnishings, equipment, inventory
or other property of either the Landlord or Tenant in, about or upon the
Premises or the Common Area, which is caused by or results from perils, events
or happenings which are the subject of issuance carried by the respective
parties pursuant to this Paragraph 8 and in force at the time of any such loss,
whether due to the negligence of the other party or its agents and regardless of
cause or origin; provided, however, that such waiver shall be effective only to
the extent permitted by the insurance covering such loss and to the extent such
insurance is not prejudiced thereby.

9. UTILITIES. Tenant shall pay during the Lease Term and prior to delinquency
all charges for water, gas, light, heat, power, electricity, telephone or other
communication service, janitorial service, trash pick-up, sewer and all other
services supplied to or consumed on the Premises (collectively the "Services")
and all taxes, levies, fees, or surcharges therefor. Tenant shall arrange for
Services to be supplied to the Premises and shall contract for all of the
Services in Tenant's name prior to the Commencement Date. The Commencement Date
shall not be delayed by reason of any failure by Tenant to so contract for
Services. In the event that any of the Services cannot be separately billed or
metered to the Premises, or if any of the Services are not separately metered as
of the Commencement Date, the cost of such Services shall be an Operating
Expense and Tenant shall pay such cost to Landlord, as Additional Rent, as
provided in Paragraph 12 below. The lack or shortage of any Services due to any
cause whatsoever shall not affect any obligation of Tenant hereunder, and Tenant
shall faithfully keep and observe all the terms, conditions and covenants of
this Lease and pay all Rentals due hereunder, all without diminution, credit or
deduction.

10. MAINTENANCE AND REPAIRS

10.1 LANDLORD'S RESPONSIBILITIES. Landlord, at Landlord's sole cost and expense,
shall reseal and restripe the existing parking lot and wash the exterior brick
of the Building prior to the Commencement Date. Subject to the provisions of
Paragraph 15 below, Landlord shall maintain in reasonably good order and repair
the structural roof and roof surface, structural and exterior walls (including
painting thereof) and foundations of the Premises, except for any repairs
required because of the wrongful act of Tenant or Tenant's agents, which repairs
shall be made at the expense of Tenant and as Additional Rent. In addition,
Landlord may elect at any time, at its option, to maintain the heating and air
conditioning systems of the Premises. Tenant shall give prompt written notice to
Landlord of any known maintenance work required to be made by Landlord pursuant
to this Paragraph 10.1. The costs of repairs and maintenance which are the
obligation of Landlord hereunder or which Landlord elects to perform hereunder
(excluding the costs of maintenance of the foundations, structural walls,
structural roof and roof surface, which shall be paid by Landlord, except for
any repairs required because of the wrongful act of Tenant or Tenant's agents,
which repairs shall be made at the expense of Tenant and as Additional Rent)
shall be an Operating Expense and Tenant shall pay such costs to Landlord as
Additional Rent, as provided in Paragraph 12 below.

To the extent any labor dispute in which Tenant is involved or of which Tenant
is the object interferes with the performance of Landlord's duties hereunder,
Landlord shall be excused from the performance of such duties during the period
of such interference.

10.2 TENANT'S RESPONSIBILITIES. Except as expressly provided in Paragraph 10.1
above, and except for any repairs required because of the wrongful act of
Landlord or Landlord's agents, which repairs shall be made at the expense of
Landlord, tenant shall, at its sole cost, maintain the entire Premises and every
part thereof, including without limitation, windows, skylights, window frames,
plate glass, freight docks, doors and related hardware, interior walls and
partitions, and the electrical, plumbing, lighting, heating and air conditioning
systems (unless Landlord has elected to keep and maintain the heating and air
conditioning systems pursuant to Paragraph 10.1 above) in good order, condition
and repair. If Landlord has not elected to keep and maintain the heating and air
conditioning systems, Tenant shall deliver to Landlord, every six (6) months
during the Lease Term, a certificate of maintenance or its equivalent, signed by
a licensed HVAC repair and maintenance contractor and statng that the heating
and air conditioning systems servicing the Premises have been inspected,
serviced and are in good order, condition and repair. Tenant's failure to
deliver said certificate or its equivalent shalal be a Default by Tenant. If
Tenant fails to make repairs or perform maintenance work required of Tenant
hereunder or to commence and deligently pursue the same to completion within ten
(10) working days after notice from Landlord specifying the need for such
repairs or maintenance work. Landlord or Landlord's agents may, in addition to
all other rights and remedies available hereunder or by law and without waiving
any alternative remedies, enter into the Premises and make such repairs and/or
perform such maintenance work. If Landlord makes such repairs and/or performs
such maintenance work, Tenant shall reimburse Landlord upon demand and as
Additional Rent, for the cost of such repairs and/or maintenance work. Landlord
shall have no liability to Tenant for any damage, inconvenience or interference
with the use of the Premises by Tenant or Tenant's agents as a result of
Landlord performing any such repairs or maintenance, except for damage,
inconvenience or interference caused by Landlord's willful misconduct or
negligence, Tenant shall reimburse Landlord, on demand and as Additional Rent,
for the cost of damage to the Premises and/or Common Area caused by Tenant or
Tenant's agents. Tenant expressly waives the benefits of any statute now or
hereafter in effect (including without limitation the provisions of subsection 1
of Section 1932, Section 1941 and Section 1942 of the California Civil Code and
any similar law, statute or ordinance now or hereafter in effect) which would
otherwise afford Tenant the right to make repairs at Landdlord's expense (or to
deduct the cost of such repairs from Rentals due hereunder) or to terminate this
Lease because of Landlord's failure to keep the Premises in good and sanitary
order.


11. COMMON AREA
 
11.1 IN GENERAL. Subject to the terms and conditions of this Lease and such 
reasonable rules and regulations as Landlord may from time to time prescribe, 
Tenant and Tenant's agents shall have the nonexclusive right to use during the
Lease Term the access roads, sidewalks, landscaped areas and other facilities on
the Common Area. This right to use the Common Area shall terminate upon Lease
Termination. Neither Tenant nor Tenant's agents shall at any time park or
permit the parking of their vehicles in any portion of the Common Area not
designated by Landlord as a parking area.

Landlord reserves the right from time to time to make reasonable changes in the
shape, size, location, amount and extent of the Common Area. Landlord further
reserves the right to promulgate such reasonable rules and regulations relating
to the use of all or any portion of the Common Area and to reasonably amend such
rules and regulations from time to time,  with or without advance notice, as may
be reasonably appropriate. Any amendments to the rules and regulations shall be 
effective as to Tenant, and binding on Tenant, upon delivery of a copy of such
rules and regulations to Tenant. Tenant and Tenant's agents shall observe such
rules and regulations and any failure by Tenant or Tenant's agents to observe 
and comply with the rules and regulations shall be a Default by Tenant.
Landlord shall not be responsible for the nonperformance of the rules and
regulations by any tenants or occupants of the buildings or improvements which
now exist or may hereafter be constructed upon the Common Area or upon the real
property owned by Landlord adjacent to the Common Area or by any other user 
authorized by Landlord. 

Landlord furthermore reserves the right, after having given Tenant reasonable
notice, to have any vehicles owned by Tenant or Tenant's agents which are parked
in violation of the provisions of this Paragraph 11.1 or in violation of
Landlord's rules and regulations relating to parking, to be towed away at
Tenant's cost.

Landlord shall have the right to close, at reasonable times, all or any portion
of the Common Area for any reasonable purpose, including without limitation,
the prevention of a dedication thereof, or the accrual of rights of any person
or public therein.

11.2 MAINTENANCE BY LANDLORD. Landlord shall operate, manage and maintain the
Common Area. The manner in which the Common Area shall be maintained and the 
expenditures for such maintenance shall be at the sole discretion of Landlord.
The cost of such maintenance, operation and management, shall be an "Operating 
Expense", and Tenant shall pay such costs to Landlord, as Additional Rent, as 
provided in Paragraph 12 below. Alternatively, Landlord may elect at any time,
at its option, to require Tenant to operate, manage and maintain all or any
portion of the Common Area. If Landlord so elects, Tenant shall operate, manage
and maintain that portion of the Common Area designated by Landlord, at 
Tenant's sole cost and expense.

                                      19 


 
12. OPERATING EXPENSES  

12.1  DEFINITION. "Operating Expense" or "Operating Expenses" as used in this 
Lease shall mean and include all items identified in other paragraphs of this 
Lease as an Operating Expense and the total cost paid or incurred by Landlord 
for the operation, maintenance, repair, and management of the Premises and 
Common Area, which costs shall include, without limitation; the cost of Services
and utilities supplied to the Premises and Common Area (to the extent the same 
are not separately charged or metered to Tenant; water; sewage; fuel; 
electricity; lighting systems; fire protection systems; storm drainage and 
sanitary sewer systems; HVAC including air conditioning (to the extent the 
heating and air-conditioning systems in the Premises are not maintained by
Tenant at Tenant's sole cost and expense); maintenance and repair of the floor
slab; property insurance covering the Premises and any other insurance carried
by Landlord pursuant to Paragraph 8 above; cleaning, sweeping, striping,
resurfacing of parking and driveway areas; cleaning the Common Area following
storms or other severe weather; cleaning and repairing of sidewalks, curbs,
stairways; costs related to irrigation systems; the cost of complying with
rules, regulations and orders of governmental authorities, including, without
limitation, maintenance, alterations and repairs required in connection
therewith; costs related to landscape maintenance; and the cost of contesting
the validity or applicability of any governmental enactments which may affect
Operating Expenses. Operating Expenses shall also include a management fee to
Landlord in an amount equal to ten percent (10%) of the total Operating
Expenses. The specific examples of Operating Expenses stated in this Paragraph
12.1 are in no way intended to and shall not limit the costs comprising
Operating Expenses, nor shall such examples be deemed to obligate Landlord to
incur such costs or to provide such services or to take such actions except as
Landlord may be expressly required in other portions of this Lease, or except as
Landlord, in its sole discretion, may elect. All costs incurred by Landlord in
good faith for the operation, maintenance, repair and management of the Premises
and Common Area shall be deemed conclusively binding on Tenant. The provisions
of this Paragraph 12.1 shall be subject and subordinate to any conflicting
provisions in this Lease, including but not limited to the provisions of
Paragraph 10.1

12.2  PAYMENT OF OPERATING EXPENSES BY TENANT. Tenant shall pay the Operating 
Expenses to Landlord as Additional Rent and without deduction or offset. Payment
of Operating Expenses by Tenant shall be made by whichever of the following 
methods is from time to time designated by Landlord, and Landlord may change the
method of payment at any time. Operating Expenses actually incurred or paid by 
Landlord but not theretofore billed to Tenant, as invoiced by Landlord, shall be
payable by Tenant within ten (10) days after receipt of Landlord's invoice, but 
not more often than once each calendar month. Alternatively, Tenant's payment of
Operating Expenses shall be based upon Landlord's estimate of Operating Expenses
and shall be payable in equal monthly installments in advance on the first day 
of each calendar month commencing with the month following receipt of Landlord's
estimate (and subject to Landlord's right to change the method of payment). 
Within ninety (90) days after the end of each calendar year (or at Lease 
Termination) Landlord shall furnish Tenant a statement showing the actual 
Operating Expenses for the period to which Landlord's estimate pertains and 
shall concurrently either bill Tenant for the balance due (payable upon demand 
by Landlord) or credit Tenant's account for the excess previously paid.

13. ALTERATIONS AND IMPROVEMENTS

13.1  IN GENERAL. Tenant shall not make, or permit to be made, any alterations,
changes, enlargements, improvements or additions (collectively "alterations")
in, on, about or to the Premises, or any part thereof, including alterations
required pursuant to Paragraph 6.2, without the prior written consent of
Landlord which consent shall not be unreasonably withheld and without acquiring
and complying with the conditions of all permits required for such alterations
by any governmental authority having jurisdiction thereof. The term
"alterations" as used in this Paragraph 13 shall also include all heating,
lighting, electrical (including all wiring, conduit, outlets, drops, buss ducts,
main and subpanels), air conditioning, and partitioning in the Premises made by
Tenant, regardless of how affixed to the Premises. As a condition to the giving
of its consent, Landlord may impose such requirements which may be reasonably
necessary, including without limitation, the manner in which the work is done; a
right of approval of the contractor by whom the work is to be performed; the
requirement that Tenant post a completion bond in an amount and form reasonably
satisfactory to Landlord; and the requirement that Tenant reimburse Landlord, as
Additional Rent, for Landlord's actual costs incurred in reviewing any proposed
alteration, whether or not Landlord's consent is granted. In the event Landlord
consents to the making of any alterations by Tenant, the same shall be made by
Tenant at Tenant's sole cost and expense, in accordance with the plans and
specifications approved by Landlord. Tenant shall give written notice to
Landlord five (5) days prior to employing any laborer or contractor to perform
services related to, or receiving materials for use upon the Premises, and prior
to the commencement of any work or improvement on the Premises. Any alterations
to the Premises made by Tenant shall be made in accordance with applicable laws,
ordinances, regulations and codes and in a first-class workmanlike manner. In
making any such alterations, Tenant shall, at Tenant's sole cost and expense,
file for and secure and comply with any and all permits or approvals required by
any governmental departments or authorities having jurisdiction thereof and any
utility company having an interest therein. In no event shall Tenant make any
structural changes to the Premises or make any changes to the Premises which
would weaken or impair the structural integrity of the Premises.

13.2 REMOVAL UPON LEASE TERMINATION. At the time Tenant requests Landlord's 
consent, Tenant shall request a decision from Landlord in writing as to whether 
Landlord will require Tenant, at Tenant's expense, to remove any such 
alterations and restore the Premises to their prior condition at Lease 
Termination. Landlord may defer such decision until Tenant's request for such 
decision prior to the expiration of the Lease Term as described below. In the 
event Tenant failed to earlier obtain Landlord's written decision as to whether 
Tenant will be required to remove any alteration, or in the event Landlord 
elected to defer such decision, then no less than ninety (90) nor more than one 
hundred twenty (120) days prior to the expiration of the Lease Term. Tenant by 
written notice to Landlord shall request Landlord to inform Tenant whether or 
not Landlord desires to have any alterations made to the Premises by Tenant 
removed at Lease Termination. Following receipt of such notice, Landlord may 
elect to have all or a portion of Tenant's alterations removed from the Premises
at Lease Termination, and Tenant shall, at its sole cost and expense, remove at 
Lease Termination such alterations designed by Landlord for removal and repair 
all damage to the Premises and Common Area arising from such removal. In the 
event Tenant fails to so request Landlord's decision or fails to remove any 
alterations designated by Landlord for removal. Landlord may remove any 
alterations made to the Premises by Tenant and repair all damage to the Premises
and Common Area arising from such removal, and may recover from Tenant all 
reasonable costs and expenses incurred thereby. Tenant's obligation to pay such 
costs and expenses to Landlord shall survive Lease Termination. Unless Landlord 
elects to have Tenant remove (or, upon Tenant's failure to obtain Landlord's 
decision, Landlord removes) any such alterations, all such alterations, except 
for moveable furniture and trade fixtures of Tenant, shall become the property 
of Landlord upon Lease Termination (without any payment therefor) and remain
upon and be surrendered with the Premises at Lease Termination.

13.3 LANDLORD'S IMPROVEMENTS. All fixtures, improvements or equipment which are 
installed, constructed on or attached to the Premises or Common Area by Landlord
shall be a part of the realty and belong to Landlord.

14. DEFAULT AND REMEDIES

14.1 EVENTS OF DEFAULT. The term "Default by Tenant" as used in this Lease shall
mean the occurrence of any of the following events:

     (a) Tenant's failure to pay when due any Rentals;

     (b) Tenant's vacation or abandonment of the Premises;

     (c) Commencement and continuation for at least thirty (30) days of any
     case, action or proceeding by, against or concerning Tenant under any
     federal or state bankruptcy, insolvency or other debtor's relief law,
     including without limitation, (i) a case under Title 11 of the United
     States Code concerning Tenant, whether under Chapter 7, 11, or 13 of such
     Title or under any other Chapter, or (ii) a case, action or proceeding
     seeking Tenant's financial reorganization or an arrangement with any of
     Tenant's creditors;

     (d) Voluntary or involuntary appointment of a receiver, trustee, keeper, or
     other person who takes possession for more than thirty (30) days of
     substantially all of Tenant's assets or of any asset used in Tenant's
     business on the Premises, regardless of whether such appointment is as a
     result of insolvency or any other cause;

                                      20

 
    (e) Execution of an assignment for the benefit of creditors of substantially
    all assets of Tenant available by law for the satisfaction of judgment
    creditors;

    (f) Commencement of proceedings for winding up or dissolving (whether
    voluntary or involuntary) the entity of Tenant, if Tenant is a corporation
    or a partnership;

    (g) Levy of a writ of attachment or execution on Tenant's interest under
    this Lease, if such unit continues for a period of ten (10) days;

    (h) Transfer or attempted Transfer of this Lease or the Premises by Tenant
    contrary to the provisions of Paragraph 24 below; or

    (i) Breach by Tenant of any term, covenant, condition, warranty, or other
    provision contained in this Lease or of any other obligation owing or due to
    Landlord.

  14.2  REMEDIES. Upon any Default by Tenant, Landlord shall have the following 
  remedies, in addition to all other rights and remedies provided by law, to
  which Landlord may resort cumulatively, or in the alternative;

    14.21 TERMINATION. Upon any Default by Tenant, Landlord shall have the right
    (but not the obligation) to give written notice to Tenant of such default,
    and terminate this Lease and Tenant's right to possession of the Premises if
    (i) such default is in the payment of Rentals and is not cured within five
    (5) working days after any such notice, or, (ii) with respect to the
    defaults referred to in subparagraphs 14.1(b), (e), (f), (h) and (i), such
    default is not cured within thirty (30) days after any such notice (or if a
    default under subparagraphs 14.1(b) or (i) cannot be reasonably cured within
    thirty (30) days, if Tenant does not commence to cure the default within the
    thirty (30) day period or does not diligently and in good faith prosecute
    the cure to completion), or, (iii) with respect to the defaults specified in
    subparagraphs 14.1(c), (d) and (g) such default is not cured within the
    respective time periods specified in those subparagraphs. The parties agree
    that any notice given by Landlord to Tenant pursuant to this Paragraph
    14.2.1 shall be sufficient notice for purposes of California Code of Civil
    Procedure Section 1151 and Landlord shall not be required to give any
    additional notice in order to be entitled to commence an unlawful detainer
    proceeding. Upon termination of this Lease and Tenant's right to possession
    of the Premises, Landlord shall have the right to recover from Tenant;

     (a) The worth at the time of award of the unpaid Rentals which had been
     earned at the time of termination;

     (b) The worth at the time of award of the amount by which the Rentals which
     would have been earned after termination until the time of award exceeds
     the amount of such rental loss that Tenant proves could have been
     reasonably avoided;

     (c) The worth at the time of award (computed by discounting at the discount
     rate of the Federal Reserve Bank of San Francisco at the time of award plus
     one percent) of the amount by which the Rentals for the balance of the
     Lease Term after the time of award exceed the amount of such rental loss
     that Tenant proves could be reasonably avoided;

     (d) Any other amounts necessary to compensate Landlord for all detriment
     proximately caused by the Default by Tenant or which in the ordinary course
     of events would likely result, including without limitation the following;

       (i)   Expenses in retaking possession of the Premises;
       (ii)  Expenses for cleaning, repairing or restoring the Premises;
       (iii) Any unamortized real estate brokerage commission paid in connection
       with this Lease;
       (iv)  Expenses for removing, transporting, and storing any of Tenant's 
       property left at the Premises (although Landlord shall have no obligation
       to remove, transport, or store any such property);
       (v)   Expenses of reletting the Premises, including without limitation, 
       brokerage commissions and attorneys' fees;
       (vi)  Attorneys' fees and court costs; and 
       (vii) Costs of carrying the Premises such as repairs; maintenance, taxes
       and insurance premiums, utilities and security precautions (if any).

     (e) The "worth at the time of award" of the amounts referred to in
     subparagraphs (a) and (b) of this Paragraph 14.2.1 is computed by allowing
     interest at an annual rate equal to the greater of: 10%; or 5% plus the
     rate established by the Federal Reserve Bank of San Francisco, as of the
     25th day of the month immediately preceding the Default by Tenant, on
     advances to member banks under Sections 13 and 13(a) of the Federal Reserve
     Act, as now in effect or hereafter from time to time amended, not to exceed
     the maximum rate allowable by law.

  14.2.2 CONTINUANCE OF LEASE. Upon any Default by Tenant and unless and until 
  Landlord elects to terminate this Lease pursuant to Paragraph 14.2.1 above,
  this Lease shall continue in effect after the Default by Tenant and Landlord
  may enforce all its rights and remedies under this Lease, including without
  limitation, the right to recover payment of Rentals as they become due.
  Neither efforts by Landlord to mitigate damages caused by a Default by Tenant
  nor the acceptance of any Rentals shall constitute a waiver by Landlord of any
  of Landlord's rights or remedies, including the rights and remedies specified
  in Paragraph 14.2.1 above.


15. DAMAGE OR DESTRUCTION

15.1  DEFINITION OF TERMS. For the purposes of this Lease, the term: (a) 
"Insured Casualty" means damage to or destruction of the Premises from a cause 
actually insured against, for which the insurance proceeds paid or made 
available to Landlord are sufficient to rebuild or restore the Premises under 
then-existing building codes to the condition existing immediately prior to the 
damage or destruction; and (b) "Uninsured Casualty" means damage to or 
destruction of the Premises from a cause not actually insured against, or from a
cause actually insured against but for which the insurance proceeds paid or made
available to Landlord are for any reason insufficient to rebuild or restore the 
Premises under then-existing building codes to the condition existing 
immediately prior to the damage or destruction, or from a cause actually insured
against but for which the insurance proceeds are not paid or made available to 
Landlord within sixty (60) days of the event of damage or destruction.


15.2 INSURED CASUALTY.

  15.2.1  REBUILDING REQUIRED. In the event of an Insured Casualty where the 
  extent of damage or destruction is less than twenty percent (20%) of the then
  full replacement cost of the Premises, Landlord shall rebuild or restore the
  Premises to the condition existing immediately prior to the damage or
  destruction, provided that there exist no governmental codes or regulations
  that would interfere with Landlord's ability to so rebuild or restore.

  15.2.2 LANDLORD'S ELECTION. In the event of an Insured Casualty where the
  extent of damage or destruction is equal to or greater than twenty percent
  (20%) of the then full replacement cost of the Premises, Landlord may, at its
  option and at its sole discretion, rebuild or restore the Premises to the 
  condition existing immediately prior to the damage or destruction, or
  terminate this Lease. Landlord shall notify Tenant in writing within sixty
  (60) days from the event of damage or destruction of Landlord's election to
  either rebuild or restore the Premises or terminate this Lease.

  15.2.3  CONTINUANCE OF LEASE. If Landlord is required to rebuild or restore 
  the Premises pursuant to Paragraph 15.2.1 or if Landlord elects to rebuild or 
  restore the Premises pursuant to Paragraph 15.2.2, this Lease shall remain in
  effect and Tenant shall have no claim against Landlord for compensation for
  inconvenience or loss of business during any period of repair or restoration.


15.3  UNINSURED CASUALTY.

  15.3.1 LANDLORD'S ELECTION. In the event of an Uninsured Casualty, Landlord
  may, at its option and at its sole discretion (i) rebuild or restore the
  Premises as soon as reasonably possible at Landlord's expense (unless the
  damage or destruction was caused by a negligent or willful act of Tenant, in
  which event Tenant shall pay all costs of rebuilding or restoring), in which
  event this Lease shall continue in full force and effect or (ii) terminate
  this Lease, in which event Landlord shall give written notice to Tenant within
  sixty (60) days after the event of damage or destruction of Landlord's
  election to terminate this Lease as of the date of the event of damage or
  destruction, and if the damage or destruction was caused by a negligent or
  willful act to Tenant. Tenant shall be liable therefor to Landlord.

                                      21

 
15.3.2  TENANTS ABILITY TO CONTINUE LEASE. If Landlord elects to terminate this 
Lease and the extent of damage or destruction is less than twenty percent (20%) 
of the then full replacement cost of the Premises or the proceeds paid or made 
available to Landlord are for any reason insufficient to rebuild or restore the 
Premises under then-existing building codes to the condition existing 
immediately prior to the damage or destruction, and if there exist no 
governmental codes or regulations that would interfere with Landlord's ability 
to so repair or restore, then Tenant may nevertheless cause the Lease to 
continue in effect by (i) notifying Landlord in writing within ten (10) days of 
Landlord's notice of termination of Tenant's agreement to pay all costs of 
rebuilding or restoring not covered by insurance, and (ii) providing Landlord 
with reasonable security for or assurance of such payment. Tenant shall pay to 
Landlord in cash no later than thirty (30) days prior to the date of 
commencement of construction the reasonable estimated cost of rebuilding or 
restoring. In the event Tenant fails to pay such cost to Landlord by the date 
specified. Landlord may immediately terminate the Lease and recover from Tenant 
all costs incurred by Landlord in preparation for construction. If the actual 
cost of rebuilding or restoring exceeds the estimated cost of such work, Tenant 
shall pay the difference to Landlord in cash upon notification by Landlord of 
the final cost. If the cost of rebuilding or restoring is less than the 
estimated cost of such work. Tenant shall be entitled to a refund of the 
difference upon completion of the rebuilding or restoring and determination of 
final cost.

15.4 TENANT'S ELECTION.  Notwithstanding anything to the contrary contained 
in this Paragraph 15, Tenant may elect to terminate this Lease in the event the 
Premises are damaged or destroyed and, in the reasonable opinion of Landlord's 
architect or construction consultants, the restoration of the Premises cannot be
substantially completed within one hundred eighty (180) days after the event of 
damage or destruction. Tenant's election shall be made by written notice to 
Landlord within ten (10) days after Tenant receives from Landlord the estimate 
of the time needed to complete repair or restoration of the Premises. If Tenant 
does not deliver said notice within said ten (10) day period. Tenant may not 
later terminate this Lease even if substantial completion of the rebuilding or 
restoration occurs subsequent to said one hundred eighty (180) day period, 
provided that Landlord is proceeding with diligence to rebuild or restore the 
Premises. If Tenant delivers said notice within said ten (10) day period, this 
Lease shall terminate as of the date of the event of damage or destruction.

15.5  DAMAGE OR DESTRUCTION NEAR END OF LEASE TERM. Notwithstanding anything to 
the contrary contained in this Paragraph 15, in the event the Premises are 
damaged or destroyed in whole or in part (regardless of the extent of damage) 
from any cause during the last twelve (12) months of the Lease Term, Landlord 
may, at Landlord's option, terminate this Lease as of the date of the event of 
damage or destruction by giving written notice to Tenant of Landlord's election 
to do so within thirty (30) days after the event of such damage or destruction. 
For purposes of this Paragraph 15.4, if Tenant has been granted an option to 
extend or renew the Lease Term pursuant to another provision of this Lease, then
the damage or destruction shall be deemed to have occurred during the last 
twelve (12) months of the Lease Term if Tenant fails to exercise its option to 
extend or renew within twenty (20) days of the event of damage or destruction.

15.6  TERMINATION OF LEASE. If the Lease is terminated pursuant to this 
Paragraph 15, the unused balance of the Security Deposit shall be refunded to 
Tenant. The current Rent shall be proportionately reduced during the period 
following the event of damage or destruction until the date on which Tenant 
surrenders the Premises, based upon the extent to which the damage or 
destruction interferes with Tenant's business conducted in the Premises, as 
reasonably determined by Landlord, to the extent such loss is covered as an 
insured peril by the insurance carried by Landlord pursuant to Paragraph 8.1. 
All other Rentals due hereunder shall continue unaffected during such period. 
The proceeds of insurance carried by Tenant pursuant to Paragraph 8.2 shall be 
paid to Landlord and Tenant, as their interests appear.

15.7  ABATEMENT OF RENTALS. If the Premises are to be rebuilt or restored 
pursuant to this Paragraph 15, the then current Rent shall be proportionately 
reduced during the period of repair or restoration, based upon the extent to 
which the making of repairs interferes with Tenant's business conducted in the 
Premises, as reasonably determined by Landlord, to the extent such loss is 
covered as an insured peril by the insurance carried by Landlord pursuant to 
Paragraph 8.1. All other Rentals due hereunder shall continue unaffected.

15.8  LIABILITY FOR PERSONAL PROPERTY. In no event shall Landlord have any 
liability for, nor shall it be required to repair or restore, any injury or 
damage to any improvements, alterations or additions to the Premises made by 
Tenant, trade fixtures, equipment, merchandise, furniture, or any other property
installed by Tenant or at the expense of Tenant. 

15.9 WAIVER OF CIVIL CODE REMEDIES. Landlord and Tenant acknowledge that the
rights and obligations of the parties upon damage or destruction of the Premises
are as set forth herein; therefore Tenant hereby expressly waives any rights to
terminate this Lease upon damage or destruction of the Premises, except as
specifically provided by this Lease, including without limitation any rights
pursuant to the provisions of Subdivision 2 of Section 1932 and Subdivision 4 of
Section 1933 of the California Civil Code, as amended from time to time, and the
provisions of any similar law hereinafter enacted, which provisions relate to
the termination of the hiring of a thing upon its substantial damage or
destruction.


16. CONDEMNATION        

16.1  DEFINITION OF TERMS. For the purposes of this Lease, the term: (a) 
"Taking" means a taking of the Premises or Common Area or damage related to the 
exercise of the power of eminent domain and includes, without limitation, a 
voluntary conveyance, in lieu of court proceedings, to any agency, authority, 
public utility, person or corporate entity empowered to condemn property; (b) 
"Total Taking" means the Taking of the entire Premises or so much of the 
Premises of Common Area as to prevent or substantially impair the use thereof by
Tenant for the uses herein specified; provided, however, that in no event shall 
the Taking of less than twenty percent (20%) of the Premises be considered a 
Total Taking; (c) "Partial Taking" means the Taking of only a portion of the 
Premises or Common Area which does not constitute a Total Taking; (d) "Date of 
Taking" means the date upon which the title to the Premises or Common Area or a 
portion thereof, passes to and vests in the condemnor or the effective date of 
any order for possession if issued prior to the date title vests in the 
condemnor; (e) "Award" means the amount of any award made, consideration paid, 
or damages ordered as a result of a Taking.

16.2  RIGHTS. The parties agree that in the event of a Taking all rights between
them or in and to an Award shall be as set forth herein.

16.3  TOTAL TAKING. In the event of a Total Taking during the Lease Term: (a) 
the rights of Tenant under this Lease and the leasehold estate of Tenant in and 
to the Premises shall cease and terminate as of the date of Taking; (b) Landlord
shall refund to Tenant any prepaid Rent and the unused balance of the Security 
Deposit; (c) Tenant shall pay Landlord any Rentals due Landlord under the Lease,
prorated as of the date of Taking; (d) to the extent the Award is not payable to
the beneficiary or mortgagee of a deed of trust or mortgage affecting the 
Premises, Tenant shall receive from the Award those portions of the Award 
attributable to trade fixtures of Tenant; (e) the remainder of the Award shall 
be paid to and be the property of Landlord.

16.4  PARTIAL TAKING. In the event of a Partial Taking during the Lease Term 
that does not prevent Tenant from conducting its business in substantially the 
same manner as prior to the Partial Taking: (a) the rights of Tenant under the 
Lease and the leasehold estate of Tenant in and to the portion of the Premises 
taken shall cease and terminate as of the Date of Taking; (b) from and after the
Date of Taking the Rent shall be an amount equal to the product obtained by
multiplying the then market value of the Premises immediately prior to the
Taking; (c) Tenant shall receive from the Award the portions of the Award
attributable to trade fixtures of Tenant; and (d) the remainder of the Award
shall be paid to and be the property of Landlord.


17. LIENS

17.1 PREMISES TO BE FREE OF LIENS. Tenant shall pay for all labor and services
performed for, and all materials used by or furnished to Tenant, Tenant's
agents, or any contractor employed by Tenant with respect to the Premises.
Tenant shall indemnify and hold Landlord harmless from and keep the Premises and
Common Area free from any liens, claims, demands, encumbrances or judgments,
including all costs, liabilities and attorneys' fees with respect thereto,
created or suffered by reason of any labor of services performed for, or
materials used by or furnished to Tenant or Tenant's agents or any contractor 
employed by Tenant will

                                      22






 
respect to the Premises, Landlord shall have the right, at all times, to post 
and keep posted on the Premises any notices permitted or required by law, or 
which Landlord shall deem proper, for the protection of Landlord and the 
Premises and Common Area, and any other party having an interest therein, from 
mechanics' and materialmen's liens, including without limitation a notice of 
nonresponsibility. In the event Tenant is required to post an improvement bond 
with a public agency in connection with any work performed by Tenant on or to 
the Premises, Tenant shall include Landlord as an additional obligee.

17.2 NOTICE OF LIEN: BOND. Should any claims of lien be filed against, or any
action be commenced affecting the Premises, Tenant's interest in the Premises or
the Common Area, Tenant shall give Landlord notice of such lien or action within
five (5) business days after Tenant receives notice of the filing of the lien or
the commencement of the action. In the event that Tenant shall not, within
twenty days following the imposition of any such lien, cause such lien to be
released of record by payment or posting of a proper bond, Landlord shall have,
in addition to all other remedies provided herein and by law, the right, but not
the obligation, to cause the same to be released by such means as Landlord shall
deem proper, including payment of the claim giving rise to such lien or posting
of a proper bond. All such sums paid by Landlord and all expenses incurred by
Landlord in connection therewith, including reasonable attorneys' fees and
costs, shall be payable to Landlord by Tenant as Additional Rent on demand.

18. LANDLORD'S RIGHT OF ACCESS TO PREMISES

Landlord reserves and shall have the right and Tenant and Tenant's agents shall 
permit Landlord and Landlord's agents to enter the Premises at any reasonable 
time for the purpose of (i) inspecting the Premises, (ii) performing Landlord's 
maintenance and repair responsibilities set forth herein, (iii) posting notices 
of non-responsibility, (iv) placing on the Premises ordinary "For Lease" signs 
at any time within ninety (90) days prior to Lease Termination, or at any time 
Tenant is in default hereunder, or at such other times as agreed to by Landlord 
and Tenant, (v) protecting the Premises in the event of an emergency, and (vi) 
exhibiting the Premises to prospective purchasers, lenders or tenants. In the 
event of an emergency, Landlord shall have the right to use any and all means 
which Landlord may deem proper to gain access to the Premises. Any entry to the
Premises by Landlord or Landlord's agents in accordance with this Paragraph 18
or any other provision of this Lease shall not under any circumstances be
construed or deemed to be a forcible or unlawful entry into, or a detainer of
the Premises, or an eviction of Tenant from the Premises or any portion thereof
nor give Tenant the right to abate the Rentals payable under this Lease. Tenant
hereby waives any claims for damages for any injury or inconvenience to or
interference with Tenant's business, any loss of occupancy or quiet enjoyment of
the Premises, and any other loss occasioned by Landlord's or Landlord's agents'
entry into the Premises as permitted by this paragraph 18 or any other provision
of this Lease.

19. LANDLORD'S RIGHT TO PERFORM TENANT'S COVENANTS

Except as otherwise expressly provided herein, if Tenant shall at any time fail
to make any payment or perform any other act required to be made or performed by
Tenant under this Lease, Landlord may upon ten (10) days written notice to
Tenant, but shall not be obligated to and without waiving or releasing Tenant
from any obligation under this Lease, make such payment or perform such other
act to the extent that Landlord may deem desirable, and in connection therewith,
pay expenses and employ counsel. All sums so paid by Landlord and all penalties,
interest and reasonable costs in connection therewith shall be due and payable
by Tenant as Additional Rent upon demand.

20. LENDER REQUIREMENTS

20.1 SUBORDINATION. This Lease, at Landlord's option, shall be subject and 
subordinate to the lien of any mortgages or deeds of trust (including all 
advances thereunder, renewals, replacements, modifications, supplements, 
consolidations, and extensions thereof) in any amount(s) whatsoever now or 
hereafter placed on or against or affecting the Premises and/or the real 
property comprising the Common Area or Landlord's interest or estate therein, 
without the necessity of the execution and delivery of any further instruments 
on the part of Tenant to effectuate such subordination. If any mortgagee or 
beneficiary shall elect to have this Lease prior to the lien of its mortgage or 
deed of trust, and shall give written notice thereof to Tenant, this Lease shall
be deemed prior to such mortgage or deed of trust, whether this Lease is dated 
prior or subsequent to the date of such mortgage or deed of trust or the date of
the recording thereof.

20.2 SUBORDINATION AGREEMENTS. Tenant shall execute and deliver, without charge 
therefor, such further instruments evidencing subordination of this Lease to the
lien of any mortgages or deeds of trust affecting the Premises and/or real 
property comprising the Common Area as may be required by Landlord within ten 
(10) days following Landlord's request therefor; provided that such mortgagee or
beneficiary under such mortgage or deed of trust agrees in writing that this 
Lease shall not be terminated in the event of any foreclosure if Tenant is not 
in default under this Lease. Failure of Tenant to execute such instruments 
evidencing subordination of this Lease shall constitute a Default by Tenant 
hereunder.

20.3 APPROVAL BY LENDERS. Tenant recognizes that the provisions of this Lease
may be subject to the approval of any financial institution that may make a loan
secured by a new or subsequent deed of trust or mortgage affecting the Premises
and/or real property comprising the Common Area. If the financial institution
should require, as a condition to such financing, any modifications of this
Lease in order to protect its security interest in the Premises, including
without limitation, modification of the provisions relating to damage to and/or
condemnation of the Premises, Tenant agrees to execute the appropriate
amendments; provided, however, that no modification shall substantially change
the size, location or dimension of the Premises, or increase the Rentals payable
by Tenant hereunder or substantially increase or change Tenant's rights or
obligations under the Lease. If Tenant refuses to execute any such amendment,
Landlord may, in Landlord's discretion, terminate this Lease.

20.4 ATTORNMENT. In the event of foreclosure or the exercise of the power of
sale under any mortgage or deed of trust made by Landlord and covering the
Premises and/or real property comprising the Common Area, Tenant shall attorn to
the purchaser upon any such foreclosure or sale and recognize such purchaser as
the Landlord under this Lease, provided such purchaser expressly agrees in
writing to be bound by the terms of the Lease, including, but not limited to,
the quiet enjoyment provisions of Paragraph 39.

20.5 ESTOPPEL CERTIFICATES AND FINANCIAL STATEMENTS.

  (a) DELIVERY BY TENANT. Tenant shall, within ten (10) days following request
  by Landlord therefor and without charge, execute and deliver to Landlord any
  and all documents, estoppel certificates, and current financial statements of
  Tenant reasonably requested by Landlord in connection with the sale or
  financing of the Premises and/or real property comprising the Common Area, or
  reasonably requested by any lender making a loan affecting the Premises and/or
  real property comprising the Common Area. Landlord may require that Tenant in
  any estoppel certificate shall (i) certify that this Lease is unmodified and
  in full force and effect (or, if modified, state the nature of such
  modification and certify that this Lease, as so modified, is in full force and
  effect) and has not been assigned, (ii) certify the date to which Rentals are
  paid in advance, if any, (iii) acknowledge that there are not, to Tenant's
  knowledge, any uncured defaults on the part of Landlord hereunder, or specify
  such defaults if claimed, (iv) evidence the status of this Lease as may be
  required either by a lender making a loan to Landlord to be secured by a deed
  of trust or mortgage covering the Premises and/or real property comprising the
  Common Area or a purchaser of the Premises and/or real property comprising the
  Common Area from Landlord, (v) warrant that in the event any beneficiary of
  any security instrument encumbering the Premises and/or real property
  comprising the Common Area forecloses on the security instrument or sells the
  Premises and/or real property comprising the Common Area pursuant to any power
  of sale contained in such security instrument, such beneficiary shall not be
  liable for the Security Deposit, (vi) certify the date Tenant entered into
  occupancy of the Premises and that Tenant is conducting business at the
  Premises, (vii) certify that all improvements to be constructed on the
  Premises by Landlord have been substantially completed except for punch list
  items which do not prevent Tenant from using the Premises for its intended
  use, and (viii) certify such other matters relating to the Lease and/or
  Premises as may be requested by a lender making a loan to Landlord or a
  purchaser of the Premises and/or real property comprising the Common Area
  from Landlord. Any such estoppel certificate may be conclusively relied upon
  by any prospective purchaser or encumbrancer of the Premises and/or real
  property comprising the Common Area. Any financial statements of Tenant shall
  include an opinion of a certified public accountant (if available) and a
  balance sheet and profit and loss statement for the most recent fiscal year,
  all prepared in accordance with generally accepted accounting principles
  consistently applied. Notwithstanding the foregoing, the most recent certified
  financial statements, balance sheet and profit and loss statement of General
  Signal shall satisfy the requirements of this Paragraph 20.5.

  (b) NONDELIVERY BY TENANT. Tenant's failure to deliver an estoppel certificate
  as required pursuant to Paragraph 20.5(a) above shall be conclusive upon
  Tenant that (i) this Lease is in full force and effect, without modification
  except as may be represented by Landlord and has not been assigned, (ii) there
  are now no uncured defaults in Landlord's performance, (iii) no Rentals have
  been paid in advance except those that are set forth in this Lease, (iv) no
  beneficiary of any security instrument encumbering the Premises and/or real
  property comprising the Common Area shall be liable for the Security Deposit
  in the event of a foreclosure or sale under such security instrument, (v) the
  improvements to be constructed on the Premises by Landlord have been
  substantially completed except for punch list items which do not prevent
  Tenant from

                                      23

 
using the Premises for its intended use, and (vi) Tenant has entered into 
occupancy of the Premises on such date as may be represented by Landlord and is 
open and conducting business at the Premises. Tenant's failure to deliver any 
financial statements, estoppel certificates or other documents as required 
pursuant to Paragraph 20.5(a) above shall be a Default by Tenant.

21. HOLDING OVER
This Lease shall terminate without further notice at the expiration of the Lease
Term. It is the desire of Landlord either to enter into a new lease with Tenant 
for the Premises prior to the expiration of the Lease Term, or to have Tenant 
vacate the Premises pursuant to Paragraph 35 below. Therefore, any holding over 
by Tenant after Lease Termination shall not constitute a renewal or extension of
the Lease Term, nor give Tenant any rights in or to the Premises except as 
expressly provided in this Lease. Any holding over after Lease Termination with 
the consent of Landlord shall be construed to be a tenancy from month to month, 
at 200% of the monthly Rent for the month preceding Lease Termination in 
addition to all Additional Rent payable hereunder, and shall otherwise be on the
terms and conditions herein specified insofar as applicable. If Tenant remains 
in possession of the Premises after Lease Termination without Landlord's 
consent, Tenant shall indemnify Landlord against any loss or liability resulting
from Tenant's failure to surrender the Premises, including without limitation, 
any claims made by any succeeding tenant based on delay in the availability of 
the Premises.

22. NOTICES
Any notice required or desired to be given under this Lease shall be in writing,
and all notices shall be given by personal delivery or mailing. All notices 
personally given on Tenant may be delivered to any person apparently in charge 
at the Premises or to the corporate officer or agent of Tenant if Tenant is a 
corporation, or on any one signatory party if more than one party signs this 
Lease on behalf of Tenant; any notice so given shall be binding upon all 
signatory parties as if served upon each such party personally. Any notice given
pursuant to this Paragraph 22 shall be deemed to have been given when personally
delivered, or if mailed, when seventy-two hours have elapsed from the time when 
such notice was deposited in the United States mail certified or registered mail
and postage prepaid, addressed to the party at the last address given for 
purposes of notice pursuant to the provisions of this Paragraph 22. At the date 
of execution of this Lease, the addresses of Landlord and Tenant are set forth 
in Paragraph 1.11 above.

23. ATTORNEYS' FEES
In the event either party hereto shall bring any action or legal proceeding for 
damages for an alleged breach of any provision of this Lease, to recover 
Rentals, to enforce an indemnity obligation, to terminate the tenancy of the 
Premises, or to enforce, protect, interpret, or establish any term, condition, 
or covenant of this Lease or right or remedy of either party, the prevailing 
party shall be entitled to recover, as a part of such action or proceeding, 
reasonable attorneys' fees and court costs, including attorneys' fees and costs 
for appeal, as may be fixed by the court or jury.

24. ASSIGNMENT, SUBLETTING AND HYPOTHECATION 
24.1 IN GENERAL. Tenant shall not voluntarily sell, assign or transfer all or 
any part of Tenant's interest in this Lease or in the Premises or any part 
thereof, sublease all or any part of the Premises, or permit all or any part of 
the Premises to be used by any person or entity other than Tenant or Tenant's 
employees, except as specifically provided in this Paragraph 24.

24.2 VOLUNTARY ASSIGNMENT AND SUBLETTING.

  (a) NOTICE TO LANDLORD. Tenant shall, by written notice, advise Landlord of
  Tenant's desire on a stated date (which date shall not be less than thirty
  (30) days nor more than ninety (90) days after the date of Tenant's notice) to
  assign this Lease or to sublet all or any part of the Premises for any part of
  the Lease Term. Said notice shall state that the notice constitutes an offer
  to terminate the Lease or Tenant's interest in the portion of the Premises
  specified pursuant to Paragraph 24.2(b) if the notice applies to a proposed
  assignment of the Lease or Tenant's interest therein, a proposed sublease of
  all or any part of the Premises for more than fifty percent (50%) of the
  remainder of the Lease Term, or a proposed sublease of more than fifty percent
  (50%) of the Premises for any period. Tenant's notice shall state the name,
  legal composition and address of the proposed assignee or subtenant, and
  Tenant shall provide the following information to Landlord with said notice:
  a true and complete copy of the proposed assignment agreement or sublease;
  financial statement of the proposed assignee or subtenant prepared in
  accordance with generally accepted accounting principles within one year prior
  to the proposed effective date of the assignment or sublease; the nature of
  the proposed assignee's or subtenant's business to be carried on in the
  Premises; the payments to be made or other consideration to be given on
  account of the assignment or sublease; a current financial statement of
  Tenant; and such other pertinent information as may be requested by
  Landlord, all in sufficient detail to enable Landlord to evaluate the proposed
  assignment or sublease and the prospective assignee or subtenant. Tenant's
  notice shall not be deemed to have been served or given until such time as
  Tenant has provided Landlord with all information reasonably requested by
  Landlord pursuant to this Paragraph 24.2. Tenant shall immediately notify
  Landlord of any modification to the proposed terms of such assignment or
  sublease. Tenant may withdraw its notice at anytime prior to exercise by
  Landlord of Landlord's right to terminate as described in Paragraph 24.2(b).

(b) OFFER TO TERMINATE. If Tenant notifies Landlord of its desire to assign this
Lease or any interest herein, to sublet all or any part of the Premises for 
more than fifty percent (50%) of the remainder of the Lease Term, or to sublet 
more than fifty percent (50%) of the Premises for any period. Tenant's notice 
shall constitute an offer to terminate this Lease or Tenant's interest in the 
portion of the Premises specified and Landlord shall have the right, to be 
exercised by giving written notice to Tenant within thirty (30) days after 
receipt of Tenant's notice, to terminate the Lease (i) entirely, in the event of
a proposed assignment or a sublease of the entire Premises for the remainder of 
the Lease Term, (ii) as to the portion of the Premises which is the subject of a
proposed sublease for more than fifty percent (50%) of the remainder, or (iii) 
as to the portion of the Premises which is the subject of a proposed sublease of
more than fifty percent (50%) of the Premises for any period, as specified in 
Tenant's notice. For purposes of this Paragraph 24.2(b), (i) the term of a 
proposed sublease shall include all options to extend or renew, and (ii) a 
proposed sublease shall be deemed to be for the remainder of the Lease Term if 
the term of the proposed sublease will expire within one year of the end of the 
Lease Term. If Tenant's notice specifies all of the Premises and Landlord elects
to terminate, this Lease shall terminate on the date stated in the notice given 
by Tenant pursuant to Paragraph 24.2(a), subject to any obligations which have 
accrued and are unfulfilled as of such date. If Tenant's notice specifies less 
than all of the Premises and Landlord elects to terminate, this Lease shall 
terminate on the date stated with respect to that portion of the Premises, and 
Base Rent and all other costs and expenses payable by Tenant hereunder shall be 
adjusted pro rata, based upon the number of net leaseable square feet 
retained by Tenant after the termination, compared to the total number of net 
leaseable square feet in the entire Premises excluding any areas of the 
Premises designated in the proposed sublease for ingress and egress and common 
areas, if any. The Lease as so amended shall continue thereafter in full force 
and effect. Landlord and Tenant shall execute an amendment to this Lease 
specifying the new Premises, the adjusted Base Rent, a reasonable method for 
apportioning maintenance and operating obligations based on the multi-tenant 
nature of the Premises, and Tenant's sharer of costs and expenses; provided, 
however, that failure by either party to execute such an amendment shall not 
affect the validity of this Lease.

(c) LANDLORD'S CONSENT. If Landlord does not exercise its right to terminate 
pursuant to Paragraph 24.2(b) within thirty (30) days after receipt of 
Tenant's notice or if a proposed sublease is not subject to the provisions of 
Paragraph 24.2(b), Landlord shall not unreasonably withhold its consent to the 
proposed assignment or subletting, on the terms and conditions specified in said
notice. If Tenant's notice fails to state that it constitutes an offer to 
terminate the Lease as may be required pursuant to Paragraph 24.2(a), such 
notice shall be deemed insufficient for the purposes of this Paragraph 24.2, and
Landlord may withhold its consent to the proposed assignment or subletting in 
Landlord's absolute discretion. Without otherwise limiting the criteria upon 
which Landlord may withhold its consent to any proposed assignment or sublease, 
if Landlord withholds its consent where Tenant is in default at the time of the 
giving of Tenant's notice or at any time thereafter, or where the net worth of 
the proposed assignee or subtenant (according to generally accepted accounting 
principles) is substantially less than the greater of (i) the net worth of 
Tenant immediately prior to the assignment or sublease, (ii) or the net worth of
Tenant at the time this Lease is executed, such withholding of consent shall be
presumptively reasonable. Any and all rent paid by an assignee or subtenant, 
including, but not limited to, any rent in excess of the Rentals to be paid 
under this Lease (prorated in the event of a sublease of less than the entire 
Premises), shall be paid directly to Landlord, as Additional Rent, at the time 
and place specified in this Lease.* For the purposes of this Paragraph 24, the 
term "rent" shall include any consideration of any kind received, or to be 
received, by Tenant from an assignee or subtenant, if such sums are related to 
Tenant's interest in this Lease or in the Premises, including, but not limited 
to, key money, bonus money, and payments (substantially in excess of the fair 
market value thereof) for Tenant's assets, fixtures, trade fixtures, inventory, 
accounts, goodwill, equipment, furniture, general intangibles, and any capital 
stock or other equity ownership interest

*The foregoing notwithstanding, with respect to any sublease, all rents in 
excess of the Rentals to be paid under this Lease (prorated on the basis of the 
square footage of the subleased portion) shall be paid fifty percent (50%) to 
Landlord, as and when received, and fifty percent (50%) to Tenant, after 
deducting any advertising expenses, sublessee improvements or brokerage fees 
actually incurred by Tenant in connection therewith, amortized over the term of 
the sublease.

                                      24

 
      of Tenant. Any assignment or subletting without Landlord's consent shall
      be voidable at Landlord's option, and shall constitute a Default by
      Tenant. Landlord's consent to any one assignment or sublease shall not
      constitute a waiver of the provisions of this Paragraph 24 as to any
      subsequent assignment or sublease nor a consent to any subsequent
      assignment or sublease; further, unless the parties otherwise agree in
      writing. Landlord's consent to an assignment or sublease shall not release
      Tenant from Tenant's obligations under this Lease, and Tenant shall remain
      jointly and severally liable with the assignee or subtenant. If Landlord
      agrees to release Tenant from its obligations hereunder upon an assignment
      of the Lease, General Signal shall also be released from its obligations
      as guarantor.

      (d) ASSUMPTION OF OBLIGATIONS. In the event Landlord consents to any
      assignment, such consent shall be conditioned upon the assignee expressly
      assuming and agreeing to be bound by each of Tenant's covenants,
      agreements and obligations contained in this Lease, pursuant to a written
      assignment and assumption agreement in a form approved by Landlord.
      Landlord's consent to any assignment or sublease shall be evidenced by
      Landlord's signature on said assignment and assumption agreement or on
      said sublease or by a separate written consent. In the event Landlord
      consents to a proposed assignment or sublease, such assignment or sublease
      shall be valid and the assignee or subtenant shall have the right to take
      possession of the Premises only if an executed original of the assignment
      or sublease is delivered to Landlord, and such document contains the same
      terms and conditions as stated in Tenant's notice to Landlord given
      pursuant to Paragraph 24.2(a) above, except for any such modifications to
      which Landlord has consented in writing.

    24.3 COLLECTION OF RENT. Tenant hereby irrevocably gives to and confers upon
    Landlord, as security for Tenant's obligations under this Lease, the right,
    power and authority to collect all rents from any assignee or subtenant of
    all or any part of the Premises as permitted by this Paragraph 24, or
    otherwise, and Landlord, as assignee of Tenant, or a receiver for Tenant
    appointed on Landlord's application, may collect such rent and apply it
    toward Tenant's obligations under this Lease; provided, however, that until
    the occurrence of any Default by Tenant or except as provided by the
    provisions of Paragraph 24.2(b) above. Tenant shall have the right to
    collect such rent. Upon the occurrence of any Default by Tenant, Landlord
    may at any time without notice in Landlord's own name sue for or otherwise
    collect such rent, including rent past due and unpaid, and apply the same,
    less costs and expenses of operations and collection, including reasonable
    attorneys' fees, toward Tenant's obligations under this Lease. Landlord's
    collection of such rents shall not constitute an acceptance by Landlord of
    attornment by such subtenants; in the event of a Default by Tenant, Landlord
    shall have all rights provided by this Lease and by law, and Landlord may,
    upon re-entry and taking possession of the Premises, eject all parties in
    possession or eject some and not others, or eject none, as Landlord shall
    determine in Landlord's sole discretion.

    24.4 NO BONUS VALUE. Subject to the provisions of Paragraph 24.2(c), it is
    the intent of the parties hereto that this Lease shall confer upon Tenant
    only the right to use and occupy the Premises, and to exercise such other
    rights as are conferred upon Tenant by this Lease. The parties agree that
    this Lease is not intended to have a bonus value, nor to serve as a vehicle
    whereby Tenant may profit by a future assignment or sublease of this Lease
    or the right to use or occupy the Premises as a result of any favorable
    terms contained herein or any future changes in the market for leased space.
    It is the intent of the parties that any such bonus value that may attach to
    this Lease shall be and remain the exclusive property of Landlord.

    24.5 CORPORATIONS AND PARTNERSHIPS. If Tenant is a partnership, any
    withdrawal or substitution (whether voluntary, involuntary, or by operation
    of law and whether occurring at one time or over a period of time) of any
    partner(s) owning fifty percent (50%) or more of the partnership, any
    assignment(s) of fifty percent (50%) or more (cumulatively) of any interest
    in the capital or profits of the partnership, or the dissolution of the
    partnership shall be deemed an assignment of this Lease requiring the prior
    written consent of Landlord. If Tenant is a corporation, any dissolution,
    merger, consolidation or other reorganization of Tenant, any sale or
    transfer (or cumulative sales or transfers) of the capital stock of Tenant
    in excess of fifty percent (50%), or any sale (or cumulative sales) of all
    of the assets of Tenant shall be deemed an assignment of this Lease
    requiring the prior written consent of Landlord, provided that no such
    consent will be required as long as General Signal continues to be the
    guarantor of the Lease. Any such withdrawal or substitution of partners or
    assignment of any interest in or dissolution of a partnership tenant, and
    any such sale of stock or assets of a corporate tenant without the prior
    written consent of Landlord shall be a Default by Tenant hereunder. The
    foregoing notwithstanding, the sale or transfer of any or all of the capital
    stock of a corporation, the capital stock of which is now or hereafter
    becomes publicly traded, shall not be deemed an assignment of this Lease.

    24.6 REASONABLE PROVISIONS. Tenant expressly agrees that the provisions of
    this Paragraph 24 are not unreasonable standards or conditions for purposes
    of Section 1951.4(b)(2) of the California Civil Code, as amended from time
    to time.

    24.7 ATTORNEYS' FEES. Tenant shall pay, as Additional Rent, Landlord's
    actual attorneys' fees for reviewing, investigating, processing and/or
    documenting any requested assignment or sublease, whether or not Landlord's
    consent is granted.

    24.8 INVOLUNTARY TRANSFER. No interest of Tenant in this Lease shall be
    assignable by operation of law, including, without limitation, the transfer
    of this Lease by testacy or intestacy. Each of the following acts shall be
    considered an involuntary assignment:

      (a) If Tenant is or becomes bankrupt or insolvent, makes an assignment for
      the benefit of creditors, or a proceeding under the Bankruptcy Act is
      instituted in which Tenant is the bankrupt; or, if Tenant is a partnership
      or consists of more than one person or entity, if any partner of the
      partnership or other person or entity is or becomes bankruptor insolvent,
      or makes an assignment for the benefit of creditors; 

      (b) Levy of a writ of attachment or execution on this Lease;

      (c) Appointment of a receiver with authority to take possession of the
      Premises in any proceeding or action to which Tenant is a party; or (d)
      Foreclosure of any lien affecting Tenant's interest in the Premises, which
      lien was not consented to by Landlord pursuant to Paragraph 24.9.

    An involuntary assignment shall constitute a Default by Tenant and Landlord
    shall have the right to terminate this Lease, in which case this Lease shall
    not be treated as an asset of Tenant. In the event the Lease is not
    terminated, the provision sof Paragraph 24.2(c) regarding rents paid by an
    assignee or subtenant and Paragraph 24.4 shall apply. If a writ of
    attachment or execution is levied on this Lease, or if any involuntary
    proceeding in bankruptcy is brought against Tenant or a receiver is
    appointed. Tenant shall have sixty (60) days in which to cause the
    attachment or execution to be removed, the involuntary proceeding dismissed,
    or the receiver removed.

    24.9 HYPOTHECATION. Tenant shall not hypothecate, mortgage or encumber
    Tenant's interest in this Lease or in the Premises or otherwise use this
    Lease as a security device in any manner without the consent of Landlord,
    which consent Landlord may withhold in its absolute discretion. Consent by
    Landlord to any such hypothecation or creation of a lien or mortgage shall
    not constitute consent to an assignment or other transfer of this Lease
    following foreclosure of any permitted lien or mortgage.

    24.10 BINDING ON SUCCESSORS. The provisions of this Paragraph 24 expressly
    apply to all heirs, successors, sublessees, assignees and transfers of
    Tenant.

SUCCESSORS

    25. Subject to the provisions of Paragraph 24 above and Paragraph 30.2(a)
    below, the covenants, conditions, and agreements contained in this Lease
    shall be binding on the parties hereto and on their respective heirs,
    successors and assigns.

LANDLORD DEFAULT; MORTGAGE PROTECTION

    26. Landlord shall not be in default under this Lease unless Tenant shall
    have given Landlord written notice of the breach and, within thirty (30)
    days after notice, Landlord has not cured the breach or, if the breach is
    such that it cannot reasonably be cured under the circumstances within
    thirty (30) days, has not commenced diligently to prosecute the cure to
    completion. Any money judgment obtained by Tenant based upon Landlord's
    breach of this Lease shall be satisfied only out of the proceeds of the sale
    or disposition of Landlord's interest in the Premises (whether by Landlord
    or by execution of judgment). In the event of any default on the part of
    Landlord under this Lease, Tenant shall give notice by registered or
    certified mail to any beneficiary of a deed of trust or any mortgage of a
    mortgage affecting the Premises and/or real property comprising the Common
    Area whose address shall have been furnished to Tenant, and shall offer such
    beneficiary or mortgage a reasonable opportunity too cure the default,
    including time to obtain possession of the Premises by power of sale or
    judicial foreclosure, if such should prove necessary to effect a cure.
    Landlord shall take no act that would reduce Landlord's equity in the
    Building to less than One Million Dollars ($1,000,000), determined by the
    capitalized income appraisal method.

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27. EXHIBITS

All exhibits attached to this Lease shall be deemed to be incorporated herein by
the individual reference to each such exhibit, and all such exhibits shall be
deemed to be a part of this Lease as though set forth in full in the body of the
Lease.

28. SURRENDER OF LEASE NOT MERGER

The voluntary merger surrender of this Lease by Tenant, or a mutual cancellation
thereof, shall not work a merger and shall, at the option of Landlord, terminate
all or any existing subleases or subtenants, or may, at the option of Landlord,
operate as an assignment to Landlord of any or all such subleases or subtenants.

29. WAIVER

The waiver by Landlord of any breach of any term, covenant or condition herein
contained (or the acceptance by Landlord of any performance by Tenant after the
time the same shall become due) shall not be deemed to be a waiver of such term,
covenant or condition or any subsequent breach thereof or of any other term,
covenant or condition herein contained, unless otherwise expressly agreed to by
Landlord in writing. The acceptance by Landlord of any sum less than that which
is required to be paid by Tenant shall be deemed to have been received only on
account of the obligation for which it is paid (or for which it is allocated by
Landlord, in Landlord's absolute discretion, if Tenant does not designate the
obligation as to which the payment should be credited), and shall not be deemed
an accord and satisfaction notwithstanding any provisions to the contrary
written on any check or contained in any letter of transmittal. The acceptance
by Landlord of any sum tendered by a purported assignee or transferee of Tenant
shall not be deemed a consent by Landlord to any assignment or transfer of
Tenant's interest herein. No custom or practice which may arise between the
parties hereto in the administration of the terms of this Lease shall be
construed as a waiver or diminution of Landlord's right to demand performance by
Tenant in strict accordance with the terms of this Lease.

30. GENERAL

30.1 CAPTIONS AND HEADINGS. The captions and paragraph headings used in this
Lease are for convenience of reference only. They shall not be construed to
limit or extend the meaning of any part of this Lease and shall not be deemed
relevant in resolving any question of interpretation or construction of any
paragraph of this Lease.

30.2 DEFINITIONS. 

  (a) LANDLORD. The term Landlord as used in this Lease, so far as the covenants
  or obligations on the part of Landlord are concerned, shall be limited to mean
  and include only the owner at the time in question of the fee title to the
  Premises. In the event of any transfer(s) of such interest, the Landlord
  herein named (and in case of any subsequent transfers or conveyances, the then
  grantor) shall have no further liability under this Lease to Tenant except as
  to matters of liability which have accrued and are unsatisfied as of the date
  of such transfer, it being intended that the covenants and obligations
  contained in this Lease on the part of Landlord shall be binding on Landlord
  and its successors and assigns only during and in respect of their respective
  periods of ownership of the fee; provided that any funds in the possession of
  Landlord or the then grantor and as to which Tenant has an interest, less any
  deductions permitted by law or this Lease, shall be turned over to the
  grantee. The covenants and obligations contained in this Lease on the part of
  Landlord shall, subject to the provisions of this Paragraph 30.2(a), be
  binding upon each Landlord and such Landlord's heirs, personal
  representatives, successors and assigns only during its respective period of
  ownership. Except as provided in this Paragraph 30.2(a), this Lease shall not
  be affected by any transfer of Landlord's interest in the Premises, and Tenant
  shall attorn to any transferee of Landlord provided that all of Landlord's
  obligations hereunder are assumed in writing by such transferee.

  (b) AGENTS. For purposes of this Lease and without otherwise affecting the
  definition of the word "agent" or the meaning of an "agency", the term
  "agents" shall be deemed to include the agents, employees, officers,
  directors, servants, invitees, contractors, successors, representatives,
  subcontractors, guests, customers, suppliers, partners, affiliated companies,
  and any other person or entity related in any way to the respective party,
  Tenant or Landlord.

  (c) INTERPRETATION OF TERMS. The words "Landlord" and "Tenant" as used herein
  shall include the plural as well as the singular. Words in the neuter gender
  include the masculine and feminine and words in the masculine or feminine
  gender include the neuter.

30.3 COPIES. Any executed copy of this Lease shall be deemed an original for
all purposes.

30.4 TIME OF ESSENCE. Time is of the essence as to each and every provision
in this Lease requiring performance within a specified time.

30.5 SEVERABILITY. In case any one or more of the provisions contained herein
shall for any reason be held to be invalid, illegal or unenforceable in any
respect, such invalidity, illegality or unenforceability shall not affect any
other provision of this Lease, but this Lease shall be construed as if such
invalid, illegal or unenforceable provision had not been contained herein.
However, if Tenant's obligation to pay the Rentals is determined to be invalid
or unenforceable, this Lease at the option of Landlord shall terminate.

30.6 GOVERNING LAW. This lease shall be construed and enforced in accordance
with the laws of the State of California.

30.7 JOINT AND SEVERAL LIABILITY. If Tenant is more than one person or entity,
each such person or entity shall be jointly and severally liable for the
obligations of Tenant hereunder. If Tenant is a husband and wife, the
obligations hereunder shall extend to their sole and separate property as well
as community property.

30.8 CONSTRUCTION OF LEASE PROVISIONS. Although printed provisions of this Lease
were prepared by Landlord, this Lease shall not be construed either for or
against Tenant or Landlord, but shall be construed in accordance with the
general tenor of the language to reach a fair and equitable result.

30.9 CONDITIONS. All agreements by Tenant contained in this Lease, whether
expressed as covenants or conditions, shall be construed to be both covenants
and conditions, conferring upon Landlord, in the event of a breach thereof, the
right to terminate this Lease.

30.10 TENANT'S FINANCIAL STATEMENTS. Tenant hereby warrants that all financial
statements delivered by Tenant to Landlord are true, correct, and complete, and
prepared in accordance with generally accepted accounting principles. Tenant
acknowledges and agrees that Landlord is relying on such financial statements in
accepting this Lease, and that a breach of Tenant's warranty as to such
financial statements shall constitute a Default by Tenant.

30.11 WITHHOLDING OF LANDLORD'S CONSENT. Notwithstanding any other provision of
this Lease, where Tenant is required to obtain the consent (whether written or
oral) of Landlord to do any act, or to refrain from the performance of any act.
Tenant agrees that if Tenant is in default with respect to any substantial term,
condition, covenant or provision of this Lease, then Landlord shall be deemed to
have acted reasonably in withholding its consent if said consent is in fact,
withheld.

31. SIGNS

Tenant shall not place or permit to be placed any sign or decoration on the
Common Area or the exterior of the Premises or that would be visible from the
exterior of the Premises, without the prior written consent of Landlord, which
consent will not be unreasonably withheld. In no event shall any such sign
revolve, rotate, move or create the illusion of revolving, rotating or moving or
be internally illuminated and, except for a spotlight which Tenant may install
on the existing monument sign, there shall be no exterior spotlighting or other
illumination on any such sign. Tenant, upon written notice by Landlord, shall
immediately remove any of Tenant's signs or decorations that are visible from
the exterior of the Premises which were installed without Landlord's prior
written consent, which shall not be unreasonably withheld or that Tenant has
placed or permitted to be placed on the Common Area or the exterior of the
Premises without the prior written consent of Landlord. If Tenant fails to so
remove such sign or decoration within five (5) working days after Landlord's
written notice, Landlord may enter the Premises and remove such sign or
decoration and Tenant shall pay Landlord, as Additional Rent upon demand, the
cost of such removal. All signs placed on the Premises or Common Area by Tenant
shall comply with all recorded documents affecting the Premises, including but
not limited to any Declaration of Conditions, Covenants and Restrictions; the
sign criteria, which will be attached hereto as Exhibit "E" if applicable (as
the same may be amended from time to time); and applicable statutes, ordinances,
rules and regulations of governmental agencies having jurisdiction thereof. At
Landlord's option, Tenant shall at Lease Termination remove any sign which is
has placed on the Premises or the Common Area, and shall, at its sole cost,
repair any damage caused by the installation or removal of such sign.

                                      26


 
32. LANDLORD AS PARTY DEFENDANT

If, by reason of any act or omission by Tenant or Tenant's agents, Landlord is
made a party defendant concerning this Lease (other than as a defendant in an
action brought against Landlord by Tenant or Tenant's agent), the Premises, or
the Common Area, Tenant shall indemnify Landlord against all liability
incurred (or threatened against) Landlord as a party defendant including all
damages, costs and attorneys' fees.

33. LANDLORD NOT A TRUSTEE

Landlord shall not be deemed to be a trustee of any funds paid to Landlord by
Tenant (or held by Landlord for Tenant) pursuant to this Lease, including
without limitation the Security Deposit. Landlord shall not be required to keep
any such funds separate from Landlord's general funds. Any funds held by
Landlord pursuant to this Lease shall not bear interest.

34. INTEREST

Any payment due from Tenant to Landlord, except for Rent received by Landlord 
within thirty (30) days after the same is due, shall bear interest from the date
due until paid, at an annual rate equal to the greater of: ten percent (10%); or
five percent (5%) plus the rate established by the Federal Reserve Bank of San 
Francisco, as of the twenty-fifth (25th) day of the month immediately preceding 
the due date, on advances to member banks under Sections 13 and 13(a) of the 
Federal Reserve Act, as now in effect or hereafter from time to time amended. In
addition, Tenant shall pay all costs and attorneys' fees incurred by Landlord in
the collection of such amounts.

35. SURRENDER OF PREMISES

On the last day of the Lease Term or upon the sooner termination of this Lease, 
Tenant shall, to the reasonable satisfaction of Landlord, surrender the Premises
to Landlord in good condition (reasonable wear and tear excepted) with all 
originally painted interior walls washed, or re-painted if marked or damaged and
other interior walls cleaned and repaired or replaced, all carpets cleaned and 
in good condition, the air conditioning, ventilating and heating equipment 
inspected, serviced and repaired by a reputable and licensed service firm
(unless Landlord has elected to maintain heating and air conditioning systems
pursuant to Paragraph 10.1 above), and all floors cleaned and waxed. Tenant
shall remove all of Tenant's personal property and trade fixtures from the
Premises, and all property not so removed shall be deemed abandoned by Tenant.
Furthermore, Tenant shall immediately repair all damage to the Premises and
Common Area caused by any such removal. If the Premises are not so surrendered
at Lease Termination, Tenant shall indemnify Landlord against any loss or
liability resulting from delay by Tenant in so surrendering the Premises
including, without limitation, any claims made by any succeeding tenant or
losses to Landlord due to lost opportunities to lease to succeeding tenants.

36. NO PARTNERSHIP OR JOINT VENTURE

Nothing in this Lease shall be construed as creating a partnership or joint 
venture between Landlord, Tenant, or any other party, or cause Landlord to be 
responsible for the debts or obligations of Tenant or any other party.

37. ENTIRE AGREEMENT

Any agreements, warranties, or representations not expressly contained herein 
shall in no way bind either Landlord or Tenant, and Landlord and Tenant 
expressly waive all claims for damages by reason of any statement, 
representation, warranty, promise or agreement, if any, not contained in this 
Lease. This Lease supersedes and cancels any and all previous negotiations, 
arrangements, brochures, agreements and understandings, whether written or oral,
between Landlord and its agents and Tenant and its agents with respect to the 
Premises, Common Area or this Lease. This Lease constitutes the entire agreement
between the parties hereto and no addition to, or modification of, any term or 
provision of this Lease shall be effective until and unless set forth in a 
written instrument signed by both Landlord and Tenant.

38. SUBMISSION OF LEASE

Submission of this instrument for Tenant's examination or execution does not
constitute a reservation of space nor an option to lease. This instrument shall
not be effective until executed by both Landlord and Tenant. Execution of this 
Lease by Tenant shall constitute an offer by Tenant to lease the Premises, which
offer shall be deemed accepted by Landlord when this Lease is executed by 
Landlord and delivered to Tenant.

39. QUIET ENJOYMENT

Landlord covenants and agrees with Tenant that upon Tenant paying Rentals and 
performing its covenants and conditions under the Lease, Tenant shall and may 
peaceably and quietly have, hold and enjoy the Premises for the Lease Term, 
subject, however, to the terms of this Lease and of any mortgages or deeds of 
trust affecting the Premises and/or the real property comprising the Common 
Area, and the rights reserved by Landlord hereunder. Any purchaser upon any 
foreclosure or exercise of the power of sale under any mortgage or deed of trust
made by Landlord and covering the Premises to whom Tenant xxxxxx pursuant to 
Paragraph 20.4 above shall be bound by the terms if this Paragraph 39.

40. AUTHORITY

The undersigned parties hereby warrant that they have proper authority and are 
empowered to execute this Lease on behalf of the Landlord and Tenant, 
respectively. If Tenant is a corporation (or partnership), each individual 
executing this Lease on behalf of said corporation (or partnership) represents 
and warrants that he is duly authorized to execute and deliver this Lease on 
behalf of said corporation in accordance with a duly adopted resolution of the 
Board of Directors of said corporation or in accordance with the bylaws of said 
corporation (or on behalf of said partnership in accordance with the partnership
agreement of such partnership), and that this Lease is binding upon said 
corporation (or partnership) in accordance with its terms. If Tenant is a 
corporation, Tenant shall, upon execution of this Lease, deliver to Landlord a 
certified copy of the resolution of the Board of Directors of said corporation 
authorizing or ratifying the execution of this Lease or a certificate of the
Secretary or Assistant Secretary of Tenant stating that a resolution is not
necessary. In the event Tenant should fail to deliver such resolution to
Landlord upon execution of this Lease, Landlord shall not be deemed to have
waived its right to require delivery of such resolution, and at any time during
the Lease Term Landlord may request Tenant to deliver the same, and Tenant
agrees it shall thereafter promptly deliver such resolution to Landlord. If
Tenant is a corporation, Tenant warrants that: (a) Tenant is a valid and
existing corporation; (b) Tenant is qualified to do business in California; (c)
All fees and all franchise and corporate taxes are paid to date, and will be
paid when due; (d) All required forms and reports will be filed when due; and
(e) The signers of this Lease are properly authorized to execute this Lease.

41. BUILDING PLANS

Tenant acknowledges that any plan of the Premises and Common Area which may
have been displayed or furnished to Tenant or which may be a part of Exhibit
"A" is tentative; Landlord may change the exterior of the Premises and the
shape, size, location, number, and extent of the Common Area improvements
shown on any such plan and eliminate or add any improvements to the Common
Area in Landlord's reasonable sole discretion; provided, however, that the
Premises shall be substantially as shown on such plan.

42. ADDENDUM

Paragraphs 43 through 50 are added hereto and made a part of this Lease.

IN WITNESS WHEREOF, the parties have executed this Lease effective as of the 
date set forth below.

LANDLORD:                                   TENANT:

CAMSI II, a California general              TELECOMMUNICATIONS TECHNOLOGY, INC.,
partnership                                 a Delaware corporation
- ------------------------------              ------------------------------------

By: WESTALL CORPORATION, a California       By: /s/ Norman B. Petermeier
    ----------------------------------          --------------------------------
    corporation, its General Partner        Title  President      
    ----------------------------------            ------------------------------
By: /s/ Kimball W. Small, President         By:
    ----------------------------------          --------------------------------
    KIMBALL W. SMALL, President             Title: 
    ----------------------------------             -----------------------------
By: KIMBALL SMALL INVESTMENTS 102,          Date:  12/20/85 
    a California limited partnership,             ------------------------------
    its General Partner
    By: WESTALL CORPORATION, a
        California corporation,
        its General Partner

        By /s/ Kimball W. Small
           ---------------------------
           KIMBALL W. SMALL, President

                                     27

 
ADDENDUM TO THAT CERTAIN NET LEASE AGREEMENT DATED DECEMBER 20, 1985, BY AND 
BETWEEN TELECOMMUNICATION TECHNOLOGY, INC., A DELAWARE CORPORATION ("TENANT") 
AND CAMSI II, A CALIFORNIA GENERAL PARTNERSHIP ("LANDLORD")
- ------------------------------------------------------------------------------

  43.  Option to Extend Lease Term. In consideration for Tenant not having been
in default under this Lease more than three (3) times in any one (1) calendar
year during the Lease Term, Landlord hereby grants to Tenant the option to
extend the Lease Term for one (1) additional period of five (5) years ("Extended
Term"), on the following terms and conditions:

       (a)  Tenant shall give Landlord written notice of its exercise of the 
option to extend the Lease Term no earlier than twelve (12) months nor later 
than six (6) months before the date the Lease Term would end but for said 
exercise. Time is of the essence.

       (b)  Tenant may not extend the Lease Term pursuant to this Paragraph 43 
if Tenant has been in default in the performance of any of the terms and 
conditions of this Lease more than three (3) times in any one (1) calendar year 
prior to the date of Tenant's notice of exercise of this option, or if Tenant 
shall have assigned or otherwise transferred its interest in this Lease and/or 
the Premises, whether or not Landlord's consent to such assignment or transfer 
has been given. If Tenant is in default under this Lease on the date that the 
Extended Term is to commence, then Landlord may elect to terminate this Lease 
notwithstanding any notice given by Tenant of an exercise of its option to 
extend.

       (c)  All terms and conditions of this Lease shall apply during the 
Extended Term, except that the Rent for the Extended Term shall be determined in
accordance with Paragraph 44 below.

       (d)  Once Tenant delivers notice of its exercise of the option to extend 
the Lease Term, Tenant may not withdraw such exercise and, subject to the 
provisions of this paragraph, such notice shall operate to extend the Lease
Term. Upon the extension of the Lease Term pursuant to this paragraph, the term
"Lease Term" as used in this Lease shall thereafter include the Extended Term
and the Lease Termination date shall be the expiration date of the Extended
Term.

  44. Rent During Extended Term. If Tenant elects to extend the Lease Term
pursuant to Paragraph 43 above, the Rent for the Extended Term shall be an
amount equal to ninety percent (90%) of the fair market rental value of the
Premises in relation to market conditions at the time of the extension
(including, but not limited to, rental rates for comparable space with
comparable tenant improvements (e.g., a 77,200 square foot comparable building
with tenant improvements of Twenty Dollars ($20) per square foot [adjusted for
cost of living increases during the Lease Term], and in a comparable location)
and taking into consideration any adjustments to rent based upon direct costs
(operating expenses) and taxes, load factors, financing charges, and/or cost of
living or other rental adjustments; the relative strength of the tenants; the
size of the space; and any other factors which affect market rental values at
the time of extension); provided, that the Rent for the Extended Term shall in
no

                                     -28-

 
event be lower than the Rent for the last Lease Year of the original Lease Term.
The Rent for the Extended Term shall be determined as follows:

          (a) Mutual Agreement. After timely receipt by Landlord of Tenant's 
notice of exercise of the option to extend the Lease Term, Landlord and Tenant 
shall have a period of fifteen (15) days in which to agree on the Rent for 
Extended Term. If Landlord and Tenant agree on the Rent during that period, they
shall immediately execute an amendment to this Lease stating the Rent for the 
Extended Term. If Landlord and Tenant are unable to so agree, the provisions of 
Paragraph 44(b) shall apply.

          (b) Appraisal. Within five (5) days after the expiration of the
fifteen (15) day period described in Paragraph 44(a) above, each party, at its
cost and by giving notice to the other party, shall appoint an M.A.I. real
estate appraiser, with at least five (5) years full-time commercial appraisal
experience in the area in which the Premises are located, to appraise and set
the fair market rental value of the Premises. If a party does not appoint an
appraiser within five (5) days after the other party has given notice of the
name of its appraiser, the single appraiser appointed shall be the sole
appraiser and shall set the fair market rental value. The cost of such sole
appraiser shall be borne equally by the parties. If two appraisers are appointed
by the parties as provided in this paragraph, the two appraisers shall meet
promptly and attempt to set the fair market rental value. If they are unable to
agree within twenty (20) days after the last appraiser has been appointed, then
the two appraisers shall select a third appraiser meeting the qualifications
stated in this Paragraph 44(b) within ten (10) days after the last day the two
appraisers are given to set the fair market rental value. If they are unable to
agree on the third appraiser, either of the parties to this Lease, by giving ten
(10) days notice to the other party, may apply to the presiding judge of the
Superior Court of Santa Clara County for the selection of a third appraiser who
meets the qualifications stated above. Each of the parties shall bear one-half
(1/2) of the cost of appointing the third appraiser and of paying the third
appraiser's fee. The third appraiser, however selected, shall be a person who
has not previously acted in any capacity for either party. Within twenty (20)
days after the selection of the third appraiser, the majority of the appraisers
shall set the fair market rental value. If the majority of the appraisers are
unable to set the fair market rental value within said twenty (20) day period,
the three appraisals shall be added together and the total divided by three; the
resulting quotient shall be the fair market rental value of the Premises. Ninety
percent (90%) of such amount shall be the Rent for the Extended Term. Provided,
however, that if any appraisal differs from the median appraisal by an amount
equal to more than ten percent (10%) of such median appraisal, that appraisal
shall be disregarded, and the average of the remaining appraisals (or the
remaining appraisal) shall be the fair market rental value. In establishing the
fair market rental value, the appraiser or appraisers shall consider the
reasonable market rental value for the highest and best use for the Premises
(including, but not limited to, rental rates for comparable space with
comparable tenant improvements and any adjustments to rent based upon direct
costs (operating expenses) and taxes, load

                                      29

 
factors, financing charges, and/or cost of living or other rental adjustments; 
the relative strength of the tenants; and the size of the space); without regard
to the existence of this Lease but taking into consideration the absolute 
nature of this Lease.

  45. Moving Costs.  On the Commencement Date, Landlord shall reimburse Tenant 
for its actual out-of-pocket moving expenses incurred in relocating to the 
Premises, not to exceed the sum of Sixty Thousand Dollars ($60,000).

  46. Existing Leases. In consideration of Tenant entering into this Lease, 
Landlord shall assume all future obligations of Tenant under those certain 
leases more particularly described below from the later of (i) the Commencement 
Date or (ii) the date on which Tenant vacates the below-described premises in 
the condition required at lease termination pursuant to the terms of each such 
lease:


                   Size      Monthly       Lease      
Address of Premises       (Sq. Ft.)    Rent       Expiration        Landlord
- -------------------       ---------   -------     ----------        --------
                                                          
525 Del Rey Avenue         3,065     $1,992.25      8/31/88         Harris
Sunnyvale                                                           Properties

535 Del Rey Avenue        20,000      6,616.00      11/14/87        Perry/
Sunnyvale                                                           Arrillaga 

555 Del Rey Avenue        23,600      7,600.00      11/14/87        Perry 
Sunnyvale                                                           Industrial
                                                                    Park

650 Vaqueros Avenue        6,120      2,950.00      11/30/87        Pacific 
Sunnyvale                                                           Property 
                                                                    Management
 

Tenant shall indemnify and hold Landlord harmless for all obligations under said
leases, including but not limited to obligations to restore and repair any 
damage to said Premises, incurred or relating to time periods up to and 
including the date of Tenant's vacation of said Premises.

On or before the date on which Tenant vacates each of the above-described 
premises, but no sooner than thirty (30) days before the date on which Tenant 
vacates the respective premises, and as a condition precedent to Landlord's 
obligation under this Paragraph 46 to assume the obligations of Tenant therefor,
Tenant shall deliver to Landlord an estoppel certificate from the landlord under
the respective lease in the form attached as Exhibit "F" hereto.

  47. Right of First Refusal. If at any time during the Lease Term, Landlord 
desires to sell the Premises, Landlord shall first offer to sell the Premises to
Tenant by delivering to Tenant a written notice of the proposed price. Landlord
shall not offer the Premises for sale to a third party until Tenant has had a
period of forty-five (45) days to respond to Landlord's offer and to negotiate
with Landlord the complete terms of an agreement for the purchase and sale of
the Premises. In the event Landlord and Tenant have not executed an agreement
for the purchase and sale of the Premises within said forty-five (45) day
period, Landlord may thereafter offer the Premises for sale to third parties,
and Tenant shall have
     
                                      30

 
no further right to acquire the Premises pursuant to this Paragraph 47.

  48.  Right of First Negotiation -- Expansion Building.  Landlord hereby grants
to Tenant the right of first negotiation with respect to a building to be 
constructed by Landlord (the "Expansion Building") on that certain real property
immediately adjacent to the Land on the north, commonly referred to as Parcel 
No. 18 (the "Expansion Land"), on the terms and conditions set forth herein. The
Expansion Building shall consist of approximately thirty-three thousand five 
hundred eighteen (33,518) square feet, the design of which shall be determined
by Landlord in Landlord's sole discretion. In no event shall construction of the
Expansion Building commence earlier than January 1, 1988. No late than sixty
(60) days prior to the date on which Landlord proposes to commence construction
of the Expansion Building, Landlord shall offer to lease the Expansion
Building to Tenant. In the event that Landlord and Tenant have not executed a
lease agreement for the Expansion Building within one hundred twenty (120) days
after the date of delivery of Landlord's notice to Tenant, Landlord may
thereafter offer the Expansion Building for lease to third parties, and Tenant
shall have no further right to lease the Expansion Building pursuant to this
Paragraph 48. Landlord hereby agrees that, except for that parcel of property
commonly known as Parcel No. 21, the Expansion Land will be the last parcel of
land developed by Landlord within the North Valley Business Park.

  49.  Condition of Title.  Landlord represents and warrants that there are no 
liens or encumbrances affecting the real property described in Exhibit "B" other
than as shown in the preliminary title report prepared by Santa Clara Land Title
Company dated August 6, 1985, No. SP 2220-A, a copy of which has been provided 
to Tenant, and that Landlord intends to create no additional liens prior to the 
Commencement Date other than the lien of a permanent loan.

  50.  Environmental Compliance.  Landlord warrants and represents to Tenant 
that, to the best knowledge of Landlord and without making tests or specific 
inquiry, before the commencement of the term of this Lease, there have not been 
any (a) toxic, hazardous or regulated substances, (b) toxic, hazardous or 
special wastes, or (c) underground tanks, vessels, piping or containers, as all 
such terms are defined under applicable federal, state and local laws, on or 
below the surface of the real property. Landlord will defend, indemnify and hold
harmless Tenant against any and all costs of compliance with local, state and 
federal environmental laws, statutes, ordinances and regulations that Tenant 
incurs as a result of any (a) toxic, hazardous or regulated substances, (b) 
toxic, hazardous or special wastes, or (c) underground tanks, vessels, piping or
containers, as all such terms are defined under applicable federal, state and 
local laws, that were on or below the surface of the real property as of or 
before the commencement of the term of this Lease. This indemnity shall not 
extend to, nor shall Landlord have any liability for, any consequential damages 
which may be suffered by Tenant in connection with any of the above-described 
conditions.

                                      31

 
                                                                       EXHIBIT A

                          (PROPERTY DESCRIPTION AND
                        LOCATION DIAGRAMS APPEAR HERE)

                                      32

 
                                                                       EXHIBIT B

LEGAL DESCRIPTION:

All that certain real property situate in the City of Milpitas, County of Santa 
Clara, State of California, described as follows:

PARCEL 1, as shown upon that certain Map entitled, "PARCEL MAP, ALL OF PARCELS
19 AND 21 OF THE PARCEL MAP RECORDED IN BOOK 461 OF MAPS, PAGES 36 AND 37, SANTA
CLARA COUNTY RECORDS AND A PORTION OF THE MILPITAS RANCHO, CITY OF MILPITAS,
CALIFORNIA", which Map was filed for record July 3, 1984 in Book 531 of Maps at
Page 17, Santa Clara County Records.

                                      33

 
                                  EXHIBIT "C"

                             IMPROVEMENT AGREEMENT

  This Improvement Agreement ("Agreement") is made part of that Lease dated 
December 20, 1985 by and between CAMSI II, a California general partnership 
("Landlord"), and TELECOMMUNICATIONS TECHNOLOGY, INC., a Delaware corporation 
("Tenant"). Landlord and Tenant agree that the following terms are hereby added 
to the Lease:

  1. Definitions. Unless otherwise defined in this Agreement, capitalized terms 
used herein shall have the same meaning and definition as set forth for such 
terms in the Lease. The terms listed below, when used in this Agreement, shall 
mean the following:

  (a) Approved Interior Plans. The term "Approved Interior Plans" shall have the
meaning set forth in Paragraph 2(a) of this Agreement.

  (b) Improvements. The term "Improvements" shall mean all improvements to be 
constructed by Landlord within the Premises pursuant to the Approved Interior 
Plans.

  (c) Improvement Allowance. The term "Improvement Allowance" shall mean the 
maximum amount Landlord is required to spend toward the payment of Improvement 
Costs for the Improvements, which amount is One Million Five Hundred Forty-Five 
Thousand Dollars ($1,544,000) (the product obtained by multiplying (i) Twenty 
Dollars ($20) per square foot by (ii) 77,200 square feet (the "Gross Area" of 
the Premises)). The foregoing amount is subject to increase pursuant to 
Paragraph 2(e) below. The Improvement Allowance shall apply solely to general 
purpose improvements, and not to special purpose improvements which are unique 
to Tenant's intended use of the Premises, as determined by Landlord in its 
reasonable judgment.

  (d) Improvement Costs. The term "Improvement Costs" shall mean and include 
all of the following:

    (i) All "hard" construction costs for the construction of the Improvements
  according to the Approved Interior Plans and all approved changes thereto,
  including, but not limited to:

      (A) All labor and supervision costs;

      (B) Costs of all materials and supplies;

      (C) Contract price for all construction work undertaken by general
    contractors and sub-contractors;

      (D) Fees, taxes or other charges levied by governmental or quasi-
    governmental agencies (including public utilities) in connection with the
    issuance of all authorizations, approvals, licenses, and permits necessary
    to undertake construction of the Improvements;

      (E) The cost of all equipment and fixtures provided for in the Approved 
    Interior Plans, including the

                                      34


 
    cost of installation;

      (F) The cost of all concrete, welding, survey and other testing expenses;
  
      (G) The cost of premiums for surety bonds, if any, including but not
    limited to payment and performance bonds and mechanics' lien bonds;

      (H) The cost of installing a meter or meters in the Premises to measure
    the utility services supplied to and consumed in the Premises; and

      (I) The cost of installing standard utility services (i.e., standard HVAC
    controls and distribution facilities; standard electrical panels,
    distribution facilities, wiring, fixtures, switches and receptacles) and
    special utility services (i.e., services other than those specified above).

    (ii) All "soft" construction costs directly or indirectly related to the
  construction of the Improvements including, but not limited to, the following:

      (A) Engineering, space planning and architectural fees for preparation of
    all plans, specifications and working drawings and processing of
    applications for all governmental authorizations, approvals, licenses and
    permits;

      (B) Fees of engineers, space planners, architects, attorneys and others
    providing professional or extra services in connection with the construction
    of the Improvements or the supervision of the construction; and

      (C) Inspection fees, recording costs and filing fees.

  (e) Prime Contractor and Architect. The terms "Architect" and "Prime 
Contractor" shall have the respective meanings set forth in Paragraph 2(b)(i) of
this Agreement.

  2. Construction of Improvements. Landlord agrees to construct the Improvements
in the Premises in conformance with the Approved Interior Plans approved by both
Landlord and Tenant and developed pursuant to this Paragraph 2.

  (a) Approval of Plans. On or before December 1, 1986, Tenant shall have 
delivered to Landlord information sufficient for Landlord to develop preliminary
plans and specifications for the Improvements, including information sufficient 
for Landlord's contractor to determine Tenant's air conditioning requirements. 
Landlord shall deliver such preliminary plans to Tenant for its approval, which 
shall not be unreasonably withheld, within fifteen (15) days after execution of 
this Lease by Tenant. If Tenant disapproves such plans, then the parties shall 
confer and negotiate in good faith to reach agreement on preliminary plans and 
specifications for the Improvements. Such preliminary plans and specifications 
shall be approved by both parties no later than January 22, 1986. As soon as the
preliminary plans and specifications are approved by both Landlord and Tenant, 
Landlord shall cause to be prepared final plans and specifications for the 
Improvements that are consistent with and are logical

                                      35

 
evolutions of the preliminary plans and specifications approved by the parties.
As soon as such final plans and specifications are completed, Landlord shall
deliver the same to Tenant for its approval. Such final plans and specifications
shall be approved by both parties no later than February 4, 1986. As soon as
approved by Landlord and Tenant, Landlord shall submit such final plans and
specifications and working drawings to all appropriate governmental agencies for
approval. Immediately after all such governmental approvals have been obtained,
three (3) copies of such final plans and specifications shall be initialled and
dated by Landlord and Tenant. The final plans and specifications so approved,
and all change orders specifically permitted by this Agreement, are referred to
herein as the "Approved Interior Plans" and shall become part of this Lease as
though set forth in full. Landlord shall deliver to Tenant a copy of the
Approved Interior Plans within five (5) days of receipt of all necessary
governmental approvals.

  (b) Architectural and Construction Contracts. Landlord shall contract for the 
design and construction of the Improvements in the following manner:

    (i) It is presently contemplated that the Improvements will be designed and
  constructed by Devcon Construction, Inc., architects and general contractors,
  of Milpitas, California, however, Landlord shall have no obligation to hire
  Devcon Construction, Inc., or any other specific architect or general
  contractor, for the purpose of designing and constructing the Improvements,
  and Landlord may select for such purposes any licensed architect and general
  contractor it may deem qualified to perform such work. The architect and
  general contractor so selected by Landlord are referred to herein as the
  "Architect" and "Prime Contractor", respectively.

    (ii) Prior to commencement of construction of the Improvements, Landlord
  shall cause the Prime Contractor to prepare and submit to Landlord and Tenant
  an itemized breakdown of the "hard" costs (defined in Paragraph 1(d)(i)) for
  the Improvements.

    (iii) If the overall cost of the Improvements (i.e., "hard" costs including
  Prime Contractor's fees, plus estimated "soft" costs, including architect's
  fees) exceeds the Improvement Allowance, then, at Tenant's option, the parties
  shall confer in good faith to modify the Approved Interior Plans to reduce the
  estimated overall cost of the Improvements.

  (c) Changes to Approved Interior Plans. Once the Approved Interior Plans have 
been finally approved by Landlord and Tenant and the general construction 
contract signed with the Prime Contractor, neither Landlord nor Tenant shall 
have the right to order extra work or change orders with respect to the 
construction of the Improvements without the prior written consent of the other,
which consent shall not be unreasonably withheld or delayed. All extra work or 
change orders requested by either Landlord or Tenant shall be made in writing, 
shall specify the amount of delay or the time saved resulting therefrom, shall 
specify any added or reduced cost resulting therefrom, and shall become 
effective and a part of the Approved Interior Plans once approved in writing by 
both

                                      36

 
parties.

  (d) Commencement and Completion of the Improvements. As soon as (i) the 
Approved Interior Plans have been Developed as provided above, (ii) all 
necessary governmental approvals have been obtained, and (iii) Landlord has 
entered into a general construction contract with Prime Contractor for 
construction of the Improvements, Landlord shall cause construction of the 
Improvements to be commenced and diligently prosecuted to completion so that the
Improvements may be substantially completed on or before May 1, 1986, but 
without representation or warranty as to when the Improvement will be completed.

  (e) Payment of Improvement Cost: Adjustment of Rent. The Rent specified in 
Paragraph 1.8 of the Lease was computed based on the total Improvement Costs not
exceeding Twenty Dollars ($20) per square foot of Gross Area. Landlord shall pay
all Improvement Costs up to an amount equal to the Improvement Allowance.

  In the event that the total Improvement Cost exceeds Twenty Dollars ($20) per 
square foot of Gross Area but does not exceed Twenty-Five Dollars ($25) per 
square foot of Gross Area (for a total cost of One Million Nine Hundred Thirty 
Thousand Dollars [$1,930,000]), fifty percent (50%) of the amount of said excess
cost shall be repaid by Tenant to Landlord in the form of an increase in Rent, 
the "per square foot" amount of which shall be equal to the quotient obtained by
dividing one-half (1/2) of the difference between (i) the actual Improvement 
Costs (but in no event more than the maximum Improvement Allowance of 
Twenty-Five Dollars ($25) per square foot of Gross Area or a total cost of One 
Million Nine Hundred Thirty Thousand Dollars [$1,930,000]) and (ii) Twenty 
Dollars ($20) per square foot ($1,544,000), by seventy-seven thousand two 
hundred (77,200) and amortizing said quotient over the remaining balance of the 
nine (9) year rental payment term at the rate of one and one-half percent 
(1-1/2%) per month.

  In the event the Improvement Costs exceed the Improvement Allowance by more 
than Five Dollars ($5) per square foot (i.e., exceed a total of One Million Nine
Hundred Thirty Thousand Dollars [$1,930,000]), Tenant shall repay to Landlord 
the entire amount of the excess over Twenty-Five Dollars ($25) per square foot 
of Gross Area in the form of an increase in Rent, the "per square foot" amount 
of which shall be a sum equal to the quotient obtained by dividing the excess of
the actual Improvement Costs over One Million Nine Hundred Thirty Thousand 
Dollars ($1,930,000) by seventy-seven thousand two hundred (77,200) and 
amortizing said quotient over the remaining balance of the nine (9) year rental 
payment term at the rate of one and one-half percent (1-1/2%) per month.

  3. Headings. The Paragraph headings used in this Agreement are for convenience
of reference only. They shall not be construed to limit or extend the meaning of
any part of this Agreement, and shall not be deemed relevant in resolving any 
questions of interpretation or construction of any Paragraph of this Agreement.

                                      37

 
                            LANDLORD:

Dated:  Dec. 23, 1985       CAMSI II, a California general 
       ---------------      partnership

                            By: WESTALL CORPORATION, a California
                                corporation, its General Partner

                                By  /s/ Kimball W. Small
                                    ----------------------
                                    KIMBALL W. SMALL,
                                    President

                            By: KIMBALL SMALL INVESTMENTS 102,
                                a California limited partnership,
                                its General Partner

                                By: WESTALL CORRPORATION, a Cali-
                                    fornia corporation, its
                                    General Partner

                                    By  /s/ Kimball W. Small
                                        ----------------------
                                        KIMBALL W. SMALL,
                                        President


                            TENANT:

       
Dated:  12-20-85            TELECOMMUNICATIONS TECHNOLOGY,
       ---------------        INC., a Delaware corporation
 

                            By   /s/ Norman B. Petermeier
                                 -------------------------
                                
                            Its  President
                                 -------------------------

                            By 
                                 -------------------------

                            Its 
                                 -------------------------


                                      38
 



 
                           FIRST AMENDMENT TO LEASE
                           ------------------------

  This is an amendment ("Amendment") to that certain Net Lease Agreement dated 
December 20, 1985 ("Lease"), by and between TELECOMMUNICATIONS TECHNOLOGY, INC.,
a Delaware corporation ("Tenant"), and CAMSI II, a California general 
partnership ("Landlord").

                                   RECITALS
                                   --------

  A. Landlord and Tenant are parties to the Lease for the demise of that certain
building located in the City of Milpitas, County of Santa Clara, State of 
California, shown cross-hatched on the site plan attached hereto as Exhibit "A" 
and commonly referred to as 185 South Milpitas Boulevard.

  B. Landlord and Tenant desire to modify and amend the Lease as more 
particularly described below.

  NOW, THEREFORE, the parties hereto agree as follows:

  1. Paragraphs 46 and 48 of the Lease are hereby deleted in their entirety.

  2. Except as otherwise provided herein, the terms and conditions of the Lease 
shall remain in full force and effect.

  IN WITNESS WHEREOF, the parties have executed this Amendment on the 24th day 
of October, 1986.

 
                            LANDLORD:

                            CAMSI II, a California
                            general partnership

                            By: WESTALL CORPORATION, a 
                                California corporation, 
                                its General Partner

                                    
                                By  /s/ Kimball W. Small
                                    ----------------------
                                    Kimball W. Small,
                                    President

                            By: KIMBALL SMALL INVESTMENTS 102,
                                a California limited 
                                partnership, its General Partner

                                      39


 
                            By: WESTALL CORPORATION, a
                                California corporation, 
                                its General Partner

                                    
                                By  /s/ Kimball W. Small
                                    ----------------------
                                    Kimball W. Small,
                                    President


                            TENANT:

                            TELECOMMUNICATIONS TECHNOLOGY, INC.,
                            a Delaware corporation
 
                                
                            By  /s/ Norman B. Petermeier
                                --------------------------
                                
                            Its President
                                --------------------------

                            By
                              ----------------------------

                            Its
                               ---------------------------


Acknowledged and agreed to
by Lease Guarantor:

GENERAL SIGNAL CORPORATION,
a New York corporation

     
By   /s/ Edward C. Prellwitz
   ---------------------------
     Edward C. Prellwitz

     
Its  Vice President - Planning 
     -------------------------

                                      40

 
                           SECOND AMENDMENT TO LEASE
                           -------------------------

  This is an amendment ("Amendment") to that certain Net Lease Agreement dated 
December 20, 1985 ("Lease"), by and between TELECOMMUNICATIONS TECHNOLOGY, INC.,
a Delaware corporation ("Tenant"), and the Fraser Family Trust, successor in 
interest to CAMSI II, a California general partnership ("Landlord").

                                   RECITALS
                                   --------

  A. Landlord and Tenant are parties to the Lease for the demise of that certain
building located in the City of Milpitas, County of Santa Clara, State of 
California, shown cross-hatched on the site plan attached hereto as Exhibit "A" 
and commonly referred to as 185 South Milpitas Boulevard.

  B. Landlord and Tenant desire to modify and amend the Lease as more 
particularly described below.

  NOW, THEREFORE, the parties hereto agree as follows:

  1. Paragraph 8.1 of the Lease is hereby deleted in its entirety.

  2. Paragraph 8.2 of the Lease shall be amended to include the following:

    (a) PROPERTY INSURANCE. "All risk" property insurance, including, without 
  limitation, coverage for earthquake and flood; boiler and machinery (if 
  applicable); sprinkler damage; vandalism; malicious mischief; full coverage 
  plate glass insurance; and demolition, increased cost of construction and 
  contingent liability from change in building laws on the Premises and Common 
  Area,

                                      41

 
including any improvements or fixtures constructed or installed on the Premises 
and Common Area by Landlord. Such insurance shall be in the full amount of the 
replacement cost of the foregoing, with reasonable deductible amounts, which 
deductible shall be paid by Tenant. Such insurance shall also include rental 
income insurance, insuring that one hundred percent (100%) of the Rentals (as 
the same may be adjusted hereunder) will be paid to Landlord for a period of up 
to twelve (12) months if the Premises are destroyed or damaged, as may be 
required by any beneficiary of a deed of trust or any mortgagee of any mortgage 
affecting the Premises.

  3. Except as otherwise provided herein, the terms and conditions of the Lease 
shall remain in full force and effect.

  IN WITNESS WHEREOF, the parties have executed this Amendment on the 30th day 
of September, 1988.


                            LANDLORD:

                            Fraser Family Trust
 
                                
                            By: /s/ Peter M. Fraser
                                ---------------------------- 

                                ----------------------------


                            TENANT:

                            TELECOMMUNICATIONS TECHNOLOGY, INC.,
                            a Delaware corporation
 
                                
                            By: /s/ Norman B. Petermeier
                                ---------------------------- 
                                President


                                      42

 
                                                                       EXHIBIT A

                           (PROPERTY DESCRIPTION AND
                        LOCATION DIAGRAMS APPEAR HERE)

                                      43

 
                                                         Exhibit "Y" to Sublease

                           (PROPERTY DESCRIPTION AND
                        LOCATION DIAGRAMS APPEAR HERE)

                                      44


 
                                                         Exhibit "Z" to Sublease

LEGAL DESCRIPTION:

All that certain real property situate in the City of Milpitas, County of Santa 
Clara, State of California, described as follows:

PARCEL 1, as shown upon that certain Map entitled, "PARCEL MAP, ALL OF PARCELS
19 AND 21 OF THE PARCEL MAP RECORDED IN BOOK 461 OF MAPS, PAGES 36 AND 37, SANTA
CLARA COUNTY RECORDS AND A PORTION OF THE MILPITAS RANCHO, CITY OF MILPITAS,
CALIFORNIA", which Map was filed for record July 3, 1984 in Book 531 of Maps at
Page 17, Santa Clara County Records.

                                      45

 
                              CONSENT TO SUBLEASE

  The Bryan Family Partnership II, Ltd., the Landlord (as ultimate 
successor-in-interest to CAMSI II, a California general partnership) under that 
certain Net Lease Agreement with General Signal Corporation as Tenant (as 
successor-in-interest to Telecommunications Technology, Inc.), dated December 
20, 1985, for the Premises described therein, hereby consents to the sublease of
the Premises to Conner Peripherals, Inc. pursuant to that certain Sublease 
Agreement attached hereto as Exhibit "A"; provided, however, that such consent 
shall be without waiver of the restriction in the aforementioned Net Lease 
Agreement concerning any further subletting (except as provided in Paragraph 
2(c) below).

  In addition, the Bryan Family Partnership II, Ltd. (hereinafter, the "Master 
Lessor") acknowledges that it is beneficial to have Conner Peripherals, Inc. 
sublet the Premises, and in consideration thereof hereby makes the following 
certifications and agreements:

  1. Master Lessor certifies that: (i) the copy of the Master Lease attached to 
the Sublease as Exhibit "X" constitutes the entire Master Lease and all 
amendments relating thereto; (ii) the Master Lease is in full force and effect; 
and (iii) there currently is no Default by Tenant (as that phrase is defined in 
the Master Lease), default by the Master Lessor, or, to the best of Master 
Lessor's knowledge, other event which (with the giving of notice or the passage 
of time or both) could constitute a Default by Tenant or default by the Master 
Lessor under the Master Lease.

  2. The Master Lessor agrees:

  (a) to give Conner Peripherals, Inc. (hereinafter, the "Sublessee"), at the 
same time and in the same manner as such notice is given to General Signal 
Corporation (hereinafter, the "Sublessor"), a copy of any written notice 
advising the Sublessor of a Default by Tenant under the Master Lease or of an 
event of which the Master Lessor has knowledge which (with the giving of further
notice or the passage of time or both) would constitute a Default by Tenant 
under the Master Lease: and to accept tender of payment or performance by 
Sublessee to remedy any such Default by Tenant;

  (b) to adhere, under the circumstances and subject to the conditions specified
therein, to the same restrictions on entry into the Premises imposed on the 
Sublessor under Paragraph 9(e)(10) of the Sublease; and

  (c) that its prior written consent will not be required in the case of a 
sublease of the Premises or assignment of this

                                     46

 
Sublease by Sublessee to (i) a subsidiary, affiliate, division or corporation 
controlled by or under common control with Sublessee, (ii) a successor 
corporation related to Sublessee by merger, consolidation, non-bankruptcy 
reorganization or government action, or (iii) a purchaser of substantially all 
of the assets of Sublessee's division occupying the Premises.

  (d) to release Sublessee, and its officers, agents, employees and servants 
from any and all claims or demands of damages, loss, expense or injury to the 
Premises or the Common Area, or to the furnishings, fixtures, equipment, 
inventory or other property of either Master Lessor or Sublessee in, about or 
upon the Premises or the Common Area, which is caused by or results from 
perils, events or happenings which are the subject to insurance carried by the 
Master Lessor, Sublessor or Sublessee pursuant to the Master Lease or the 
Sublease and in force at the time of any such loss, whether due to the 
negligence of the Sublessee or its agents and regardless of cause or origin; 
provided, however, that such waiver shall be effective only to the extent
permitted by the insurance covering such loss and to the extent such insurance
is not prejudiced thereby.

  IN WITNESS WHEREOF, the Master Lessor has executed this Consent to Sublease as
of the 23rd day of February, 1993.

THE BRYAN FAMILY PARTNERSHIP II, LTD.

        /s/ Robert A. Bryan
BY: ____________________________
        Robert A. Bryan, Trustee
        General Partner

                                     47

 
                     (Kimball Small Properties Letterhead)
                                                               
October 24, 1986

Mr. Norman B. Petermeier, President
TELECOMMUNICATIONS TECHNOLOGY, INC.
195 So. Milpitas Boulevard
Milpitas, CA 95035

Re: 185 So. Milpitas Boulevard, Milpitas, California

Dear Mr. Petermeier:

In consideration of Telecommunications Technology, Inc., a Delaware Corporation 
("Tenant") entering into that certain First Amendment to Lease dated October 24,
1986, amending that certain Net Lease Agreement by and between Tenant and Camsi 
II, a California general partnership ("Landlord") dated December 20, 1985 (the 
"New Lease"), Landlord and Tenant agree to the following:

  Existing Leases. In consideration of Tenant entering into the Lease, Landlord
  shall assume all future obligations of Tenant under those certain leases more
  particularly described below from April 28, 1986:

 
 
                                  Size      Monthly     Lease
Address of Premises             (Sq. Ft.)    Rent     Expiration  Landlord
- -------------------             ---------  ---------  ----------  --------
                                                       
525 Del Rey Ave.                  3,065    $1,992.25    8/31/86   Harris
Sunnyvale                                                         Properties 

535 Del Rey Ave.                 20,000     6,616.00   11/14/87   Perry/
Sunnyvale                                                         Arrillaga

555 Del Rey Ave.                 23,600     7,600.00   11/14/87   Perry
Sunnyvale                                                         Industrial
                                                                  Park

650 Vaqueros Ave.                 6,120     2,950.00   11/30/87   Pacific
Sunnyvale                                                         Property
                                                                  Management

 

                                     48

 
Norman B. Petermeier, President
October 24, 1986
Page 2
 
Tenant shall indemnify and hold Landlord harmless for all obligations under said
leases, incurred or relating to time periods up to and including April 28, 1986.
Attached is a statement agreed to by Tenant and Landlord regarding the condition
of the premises as of April 28, 1986.

  Right of First Negotiation-Expansion Building. In consideration of Tenant
  entering into the Lease, Landlord hereby grants to Tenant the right of first
  negotiation with respect to a building to be constructed by Landlord (the
  "Expansion Building") on that certain real property immediately adjacent to
  the Land on the north, commonly referred to as Parcel No. 18 (the "Expansion
  Land"), on the terms and conditions set forth herein. The Expansion Building
  shall consist of approximately 33,518 square feet, the design of which shall
  be determined by Landlord in Landlord's sole discretion. In no event shall
  construction of the Expansion Building commence earlier than January 1, 1988.
  No later than sixty (60) days prior to the date on which Landlord proposes to
  commence construction of the Expansion Building, Landlord shall offer to lease
  the Expansion Building to Tenant. In the event that Landlord and Tenant have
  not executed a Lease agreement for the Expansion Building, then one hundred
  twenty (120) days after the date of delivery of Landlord's notice to Tenant,
  Landlord may thereafter offer the Expansion Building for lease to third
  parties, and Tenant shall have no further right to lease the Expansion
  Building pursuant to this letter agreement. Landlord hereby agrees that,
  except for that parcel of property commonly known as Parcel No. 21, the
  Expansion Land will be the last parcel of land developed by Landlord within
  the North Valley Business Park.

Very truly yours,

CAMSI II, a California
general partnership

By:  WESTALL CORPORATION,
     its General Partner

        /s/ Kimball W. Small
     By_____________________
         KIMBALL W. SMALL
         President

                                     49

 
Norman B. Petermeier, President
October 24, 1986
Page 3
 
By: KIMBALL SMALL INVESTMENTS 102
    a California limited partnership
    its General Partner

    By: WESTALL CORPORATION
        a California corporation,
        its General Partner
     
            /s/ Kimball W. Small
        By_______________________
              KIMBALL W. SMALL,
              President


                     AGREED TO AND ACCEPTED BY:

                     TELECOMMUNICATIONS TECHNOLOGY, INC.,
                     a Delaware corporation

                         /s/ Norman B. Petermeier
                     By___________________________
                           
                           President
                     Title________________________


                     By___________________________

                     Title________________________

                     Date: _______________________

                                     50

 
                           SECOND AMENDMENT TO LEASE
 
  This is an amendment ("Amendment") to that certain Net Lease Agreement dated
December 20, 1985 ("Lease"), by and between TELECOMMUNICATIONS TECHNOLOGY, INC.,
a Delaware corporation ("Tenant"), and the Fraser Family Trust, successor in
interest to CAMSI II, a California general partnership ("Landlord").

                                   RECITALS

  A. Landlord and Tenant are parties to the Lease for the demise of that certain
building located in the City of Milpitas, County of Santa Clara, State of 
California, shown cross-hatched on the site plan attached hereto as Exhibit "A" 
and commonly referred to as 185 South Milpitas Boulevard.

  B. Landlord and Tenant desire to modify and amend the Lease as more 
particularly described below.

  NOW, THEREFORE, the parties hereto agree as follows:

  1. Paragraph 8.1 of the Lease is hereby deleted in its entirety.

  2. Paragraph 8.2 of the Lease shall be amended to include the following:

  (a) PROPERTY INSURANCE. "All risk" property insurance, including, without 
limitation, coverage for earthquake and flood; boiler and machinery (if 
applicable); sprinkler damage; vandalism; malicious mischief; full coverage 
plate glass insurance; and demolition, increased cost of construction and 
continent liability from change in building laws on the Premises and Common 
Area,

                                     51

 
including any improvements or fixtures constructed or installed on the Premises 
and Common Area by Landlord. Such insurance shall be in the full amount of the 
replacement cost of the foregoing, with reasonable deductible amounts, which 
deductible shall be paid by Tenant. Such insurance shall also include rental 
income insurance, insuring that one hundred percent (100%) of the Rentals (as 
the same may be adjusted hereunder) will be paid to Landlord for a period of up 
to twelve (12) months if the Premises are destroyed or damaged, as may be 
required by any beneficiary of a deed of trust or any mortgagee of any mortgage 
affecting the Premises.
 
  3. Except as otherwise provided herein, the terms and conditions of the Lease 
shall remain in full force and effect.

  IN WITNESS WHEREOF, the parties have executed this Amendment on the 30th day 
of September, 1988.

                        LANDLORD:

                        Fraser Family Trust
                 
                             /s/ Peter M. Fraser
                        By: ______________________

                            ______________________

                        TENANT:

                        TELECOMMUNICATIONS TECHNOLOGY, INC.,
                        a Delaware corporation

                             /s/ Norman B. Petermeier
                        By: __________________________
                             President


                                     52