PREFERRED VENDOR AGREEMENT

     THIS PREFERRED VENDOR AGREEMENT (the  'Agreement')  dated as of the 9th day
of December 1966 between HFS INCORPORATED ('HFS'), a Delaware Corporation having
an  office  located  at 6 Sylvan  Way,  Parsippany,  New  Jersey  07054  and ALL
COMMUNICATIONS CORPORATION ('Vendor'), a corporation having an office located at
1450 Route 22 West, Suite 103, Mountainside, New Jersey 07092.

                              W I T N E S S E T H:
                              -------------------

     WHEREAS,  HFS  is  the  parent  of  the  franchisors  (the  'Franchisors'),
respectively,  of the CENTURY 21'r',  ERA'r' and Coldwell  Banker'r' real estate
brokerage franchise systems (the 'Chains'); and

     WHEREAS,  Vendor desires to be recommended by HFS to the franchisees of the
Franchisors (the 'Franchisees') as a vendor of telephone  communication  systems
and voice mail  equipment as more fully  described in Exhibit A attached  hereto
and made a part hereof (the 'Products'); and

     WHEREAS,  Vendor and Coldwell Banker Corporation  entered into an Exclusive
Master  Purchase/Maintenance  Agreement,  dated January 16, 1996 (the  'Purchase
Agreement').

     NOW,  THEREFORE,  in consideration of the promises and covenants  contained
herein and other good and valuable consideration, the receipt of which is hereby
acknowledged, the parties hereto agree as follows:

     Section 1.  Preferred  Vendor.  (a) HFS hereby agrees that, for the term of
this Agreement as described  below,  Vendor shall be a  non-exclusive  preferred
vendor of the Products recommended by HFS to the Franchisees; provided, however,
that HFS shall not,  during the term of this  Agreement,  enter into a preferred
vendor  agreement  with  more  than  two (2)  additional  vendors  or  suppliers
('Additional  Preferred  Vendor') of telephone  communication  systems and voice
mail equipment (other than Vendor) whereby such Additional Preferred Vendors are
recommended by HFS to the  Franchisees  as providers of telephone  communication
systems and/or voice mail equipment.  Notwithstanding  anything contained herein
to the contrary,  the Additional  Preferred Vendor shall not mean or include any
vendor or supplier of a component  or element of the Products  (excluding  voice
mail  equipment)  which  vendor or supplier  has or shall enter into a preferred
vendor  agreement or similar  arrangement with HFS to be recommended or promoted
to the  Franchisees  as the vendor or  supplier  of such  component  or element.
Further,  Vendor  acknowledges  that HFS through  HFS's  Communication  Services
Division may purchase  from time to time various  goods and services  (including
telephone  systems)  for resale to certain  Franchisees.  In no event shall HFS,
through the operations of its Communication  Services Division, or the suppliers
to HFS's








Communication Services  Division,  be considered or construed as an 'Additional 
Preferred Vendor'.

     (b) HFS agrees that it will actively promote Vendor and the Products to the
Franchisees.  For marketing purposes,  HFS shall make available to Vendor a list
containing  the names,  business  addresses,  contact  telephone  numbers of the
Franchisees.  From time to time  during  the term of this  Agreement,  HFS shall
provide  Vendor  with  an  updated  list of  such  information.  Notwithstanding
anything contained herein to the contrary,  Vendor  acknowledges and agrees that
the  Products  constitute  a  telephone  communication  system  which  system is
comprised of various  components  and parts  (including  without  limitation the
voice mail component) which together, in combination, constitute such system. As
such, the Products shall be promoted and marketed to the Franchisees  under this
Agreement  as a system or unit and in no event shall  components  or elements of
the system be promoted or marketed to  Franchisees  under this  Agreement  on an
individual  basis  or as a  component  independent  of  such  system;  provided,
however,  that such restriction shall not apply to voice mail equipment provided
by Vendor under this Agreement.

     (c)  During  the  Term,   Vendor  shall  offer  the   Products,   including
installation of the Products and maintenance  service contracts  relating to the
Products, to the Franchisees through programs developed in cooperation with HFS.
Vendor shall provide,  at its cost, a toll-free  telephone number for each Chain
for  placement  of orders for the  Products.  Vendor  shall  dedicate and commit
Vendor  representatives  to handle  Franchisees'  accounts,  orders and customer
service  inquiries.  All orders of the Products shall be processed by Vendor and
Vendor shall  contact the  Franchisee to  coordinate  and schedule  delivery and
installation of the Products.  Vendor shall be responsible for all invoicing and
collection of payment  relating to each Franchisee  order.  Vendor shall provide
Franchisees with training instruction for the Products purchased. Training shall
be  conducted  by Vendor's  qualified  personnel  and shall  include any and all
necessary training materials and literature.  Vendor's current price schedule is
set forth in Exhibit A which price schedule shall remain in effect for the Term.

     (d) Vendor  shall,  at its expense  and in  conjunction  with a  designated
representative of HFS's preferred vendor group,  develop marketing materials for
use in  connection  with  promoting  the Products to the  Franchisees.  All such
materials  shall be  subject  to the prior  approval  of HFS and shall  identify
Vendor's toll-free telephone number(s). Further, within sixty (60) days from the
signing of this Agreement by the parties, HFS shall announce the the Franchisees
the appointment of Vendor by HFS as a preferred vendor of the Products.


                                      -2-







     (e)  For  each  purchase  of  the  Products  by a  Franchisee,  Vendor  and
Franchisee  shall enter into an  agreement  as mutually  agreed to by Vendor and
Franchisee.  A form of  agreement  is  attached  hereto and made part  hereof as
Exhibit B. Vendor  shall  negotiate  the terms of the  agreement  in good faith.
Vendor  agrees that it will  provide  Franchisees  purchasing  the  Products the
warranties  described  in  Exhibit  C,  which is  attached  hereto and made part
hereof.

     Section 2. Term.  The term of this Agreement (the 'Term') shall commence on
December  9, 1996 and shall  terminate  on  December  8,  2000,  unless  earlier
terminated in accordance with the terms herein set forth.

     Section 3. Access Fee.  Concurrently  with the execution of this Agreement,
Vendor  shall  pay to HFS,  in  immediately  available  funds,  the sum of Fifty
Thousand  Dollars  ($50,000) as compensation to HFS for providing  access to the
Franchisees.  Said fee is fully  earned upon payment and shall not be subject to
refund or reduction  regardless  of the  termination  of this  Agreement for any
reason.

     Section  4.  Commissions.  (a)  During  the Term,  Vendor  shall pay to HFS
commissions on the gross amount of all sales of Products (excluding labor, taxes
and  shipping)  made by  Vendor  to the  Franchisees  ('Gross  Sales')  for each
category described below, based on sales and not collections, as follows:




       Percentage of Gross Sales                        Category
       -------------------------                        --------

                                                 
                 7%                               *All Products, excluding
                                                   voice mail

                13%                                Voice Mail


     *Commissions  for the sale of the Products  (excluding  voice mail) made to
     the National  Realty Trust by Vendor (if any) shall be payable at a rate of
     2% of the Gross Sales for the Products (excluding voice mail).  Commissions
     for the sale of voice mail equipment  made to the National  Realty Trust by
     Vendor (if any) shall be payable at the rate stated above.

     (b) In addition to the  commissions  in subsection (a) above and during the
Term,  Vendor shall pay to HFS  commissions  on the gross amount of revenue from
all maintenance  services  contracts  entered into or renewed by Vendor with the
Franchisees ('Gross Revenues'), based on  sales  and  not  collections,  in  the
amount of 10% of Gross Revenues.

     (c) The commissions  payable with respect to Gross Sales and Gross Revenues
made in each  calendar  quarter  shall be paid not more than  fifteen  (15) days
after the end of such calendar quarter.  Vendor shall provide HFS with each such
payment  a  report,   certified 


                                      -3-





as true and correct by a duly authorized representative of Vendor, detailing the
sales  made to the  Franchisees  and the  calculation  of the  commissions  paid
thereon. In addition to the certified report submitted with each payment, Vendor
shall  furnish to HFS on January  31st of each year  during the Term and one (1)
year  thereafter a report  detailing the sales made to the  Franchisees  and the
calculation  of the  commissions  paid thereon for the preceding  calendar year.
This report  shall be  certified  as true and  correct by  Vendor's  independent
public accountants.

     Section  5.  Conferences;  Publications.  Vendor  shall  participate  as an
exhibitor at each national  conference for the Chains (with each Chain holding a
single  national  conference  on an annual  basis.) Vendor shall be obligated to
follow all rules and procedures  established  for each  conference.  Basis booth
costs are expected to be $2,500 per booth. Vendor shall be responsible for booth
costs and all other costs relating to its  participation  in the conferences and
booth set-up.

     Section 6. Insurance and Indemnity. (a) During the Term and for a period of
not less than six (6) months after the  termination  of this  Agreement,  Vendor
will  secure  and  maintain  comprehensive  general  liability  insurance  on an
occurrence basis  (including,  independent  contractors,  contractual,  personal
injury, products and completed operations,  and broad form property damage) with
combined  single limits of not less than One Million  Dollars  ($1,000,000)  per
occurrence.  Such  insurance  shall  name  HFS and  its  affiliates,  and  their
respective officers, directors,  employees and agents as additional insureds and
shall be  primary  for all  purposes.  All  policies  shall be  endorsed  with a
statement that the coverage may not be cancelled,  altered or permitted to lapse
or expire  without  thirty (30) days  advance  written  notice to HFS,  that the
coverage  shall  be  primary  and  that  any  insurance  carried  by  HFS or its
affiliates shall be non-contributory  to such coverage.  The names of the Vendor
and HFS as  identified  in the  policies  shall be identical to the names of the
Vendor and HFS as identified in this Agreement. If an umbrella policy is used to
satisfy any  required  coverage of this Section 6, such policy shall be at least
'Follow-Form'  with the  requirements  described in this Section 6 and not limit
the coverage of any other  policies used to provide  coverage under this Section
6.

     (b)  Simultaneously   with  the  execution  of  this  Agreement,   annually
thereafter,  and each time a change is made in any insurance policy or insurance
carrier,  Vendor will furnish to HFS a certificate  of insurance  evidencing the
insurance  coverages in effect, the named insured and additional  insureds,  and
endorsed  with a statement  that the coverage may not be  cancelled,  altered or
permitted to lapse or expire without thirty (30) days advance  written notice to
HFS.  Failure to demand such  certificates  or other evidence of full compliance
with these  insurance  requirements  or failure of HFS to identify a  deficiency
from evidence that is


                                       -4-




provided,  shall not be construed  as a waiver of  obligation  to maintain  such
insurance.

     (c) All policies  required by this Agreement  shall be written by insurance
carriers  rated 'A' or better by A.M. Best and approved by and  satisfactory  to
HFS. No 'cut  through'  endorsements  shall be  acceptable.  All policies  shall
provide  that the  insurer  waives  any right of  subrogation  against  HFS.  By
requiring  insurance as provided in this Section 6, HFS does not represent  that
coverage  and  limits  will   be  necessarily  adequate  to  protect HFS and its
affiliates, and their officers, directors, employees and agents, and such limits
shall not be deemed as a limitation of Vendor's liability under this Agreement.

     (d)  Vendor  will  indemnify  HFS and its  affiliates  against,  hold  each
harmless  from,  and promptly  reimburse  each for any and all payments of money
(fines,  damages,  legal fees, expenses) arising out of any demand,  claim, tax,
penalty,  administrative  or judicial  proceedings,  or actions  relating to any
claimed  occurrence with respect to the Products (even where HFS's negligence is
alleged) and any act,  omission or obligation of Vendor or anyone  associated or
affiliated  with  Vendor or the  Products.  Vendor  waives any right of recovery
against  HFS for any  direct or  indirect  loss  arising  out of any  occurrence
relating to the Products.

     In the event that HFS is required to respond to any claim,  action,  demand
or proceeding relating to the Products, Vendor will, at HFS's election,  respond
and defend HFS and its affiliates against such claims and demands in any actions
or  proceedings.  In the event that Vendor  fails to defend HFS when  requested,
Vendor will reimburse HFS for all costs and expenses,  including attorney  fees,
incurred by HFS. Regardless of Vendor's obligation to indemnify and defend under
this Section,  HFS has the right, through counsel of its choice, and at Vendor's
expense  to control  any matter to the extent  said  matter  could  directly  or
indirectly  adversely  affect HFS. The  obligations  of Vendor  pursuant to this
subsection (d) shall survive termination of this Agreement.

     Section  7. Books and  Records;  Audit.  Vendor  shall  keep  accurate  and
complete  records  of the  Gross  Sales and Gross  Revenues  made by Vendor  for
Franchisee  accounts.  All such records and all accounting  systems with respect
thereto  shall  be  available  for  inspection,  copy  and  audit  by HFS or its
representatives  on reasonable  notice to Vendor during  normal  business  hours
throughout  the Term of this Agreement and for one (1) year  thereafter.  Vendor
shall fully  cooperate  with HFS in such  inspection  and audit.  Neither  HFS's
acceptance of any information nor HFS's  inspection or audit of Vendor's records
shall waive HFS's right  later to dispute the  accuracy or  completeness  of any
information  supplied  by  Vendor.  In the event any such audit  established  an
underpayment of  commissions,  Vendor shall pay the amount of the deficit within
five


                                      -5-







(5) business days of  notification of such  deficiency.  In the event such audit
identifies an overpayment of  commissions,  such  overpayment  shall be a credit
against  future  commissions  to  become  due from  Vendor  to HFS.  If an audit
establishes an underpayment of commissions greater than five percent (5%) of the
total  commissions  then due and payable to HFS,  Vendor shall pay for the costs
and  expenses  of such audit.  In the event of a dispute  over the result of any
such audit, the amount so disputed shall be deposited by the party to be charged
with an escrow  agent  acceptable  to both  parties  and  pursuant  to an escrow
agreement  acceptable  to both  parties and such escrow agent until such time as
the dispute is resolved.

     Section  8.  Acknowledgements.  (a)  Vendor  acknowledges  that HFS and its
affiliates are the  franchisors,  and not the owners or operators of real estate
brokerage  offices and that, as such, HFS does not purchase the Products for its
own use and  cannot  compel or  guarantee  any  level of sales of the  Products.
Vendor further  acknowledges  that,  although HFS will recommend the purchase of
the Products from Vendor to the  Franchisees,  each Franchisee will be making an
independent  buying  decision  which  may  or  may  not  be  affected  by  HFS's
recommendation  of the  Products.  Neither  HFS  nor  any  Franchisor  shall  be
responsible for any amounts owed to Vendor by any Franchisee.

     (b) The parties  acknowledge  that Vendor and Coldwell  Banker  Corporation
entered into the Purchase  Agreement,  dated  January 16, 1996,  for the sale of
telecommunication  systems  and  related  services  and that  subsequent  to the
execution of the Purchase Agreement HFS acquired Coldwell Banker Corporation. As
a result of the acquisition,  Coldwell Banker Corporation has become and remains
a subsidiary of HFS. Upon the execution of this Agreement by HFS and Vendor, HFS
(acting on behalf of Coldwell  Banker  Corporation  ) and Vendor  agree that the
Purchase  Agreement  shall  automatically  terminate  without penalty or further
notice.  Notwithstanding  the  termination  of the  Purchase  Agreement,  vendor
acknowledges and agrees to honor all its obligations and responsibilities  under
the Purchase  Agreement which obligations and  responsibilities  are existing or
outstanding as of the date of termination of the Purchase  Agreement,  including
without  limitation,  any  warranty  and  maintenance  service  obligations  and
responsibilities.

     Section  9.  Termination.  (a) When fully  executed,  this  Agreement  will
constitute a binding  obligation  of both parties which may not be terminated by
either party  except that either party may  terminate in the event of a material
breach of the terms of this  Agreement  by the  other  party.  In the event of a
material  breach as set forth above,  the breaching party shall be given written
notice of such breach and the opportunity to cure such breach within thirty (30)
days  of the  date of such  notice  (ten  (10)  days  in the  case of a  payment
default).  Failure to cure such breach within the applicable period stated above
shall  result in

                                      -6-




termination  of the  Agreement  without the  necessity  of any further notice.

     (b) In  addition  to  the  parties'  right  of  termination  set  forth  in
subsection (a) above, this Agreement may be terminated by HFS as follows. If HFS
receives a bona fide offer in writing from a supplier for the services  provided
by Vendor  under this  Agreement  at pricing  that is at least five percent (5%)
less than the  pricing  provided  herein, HFS  may elect to notify Vendor of the
receipt of such a written bona fide offer,  including the terms thereof.  Within
fifteen  (15) days after such  notice,  Vendor may offer to HFS the same pricing
and  services  offered  by such  other  supplier.  If Vendor  does not make such
offer to  HFS within the fifteen  (15)  days, HFS  may, in its sole  discretion,
terminate this Agreement upon thirty (30) days written notice to Vendor.

     Section 10.  Representations.  (a) Each party has full power and  authority
and has been duly  authorized,  to enter into and perform its obligations  under
this Agreement, all necessary approvals of any Board of Directors, shareholders,
partners,  co-tenants and lenders having been obtained. The execution,  delivery
and  performance  of this  Agreement  by each party will not  violate , create a
default  under of breach of any charter,  bylaws,  agreement or other  contract,
license, permit, indebtedness, certificate, order, decree or security instrument
to which such party or any of its  principals is a party or is subject.  Neither
party is the  subject  of any  current  or  pending  dissolution,  receivership,
bankruptcy,  reorganization,  insolvency, or similar proceeding on the date this
Agreement is executed by such party and was not within the three years preceding
such date. The persons signing this Agreement on behalf of each party personally
represent  and  warrant to the other party that they are  authorized  to execute
this  Agreement  for and on behalf of such party and have full  authority  to so
bind such party.

     (b)  All  written  information provided to HFS about Vendor, the  principal
owners of Vendor or the finances or any such persons or entities, was or will be
at  the  time  delivered,  true, accurate and  complete,  and  such  information
contained  no  misrepresentation  of  a  material  fact,  and does not  omit any
material  fact necessary  to  make  the   information   disclosed not misleading
under the circumstances in which it is disclosed.

     Section  11.  Trademarks.   Vendor  specifically   acknowledges  that  this
Agreement  does not  confer  upon  Vendor  any  interest  in or right to use any
trademark,  service  mark or  other  intellectual  property  right  of HFS,  the
Franchisors or their affiliates (collectively referred  to as  the 'Intellectual
Property  Rights') in connection  with the Products  unless Vendor  receives the
prior written consent of HFS which consent HFS may grant or withhold in its sole
discretion.  Vendor  further  agrees that upon  termination  of this  Agreement,
Vendor  shall  immediately  cease and  discontinue  all use


                                      -7-




of the Intellectual  Property Rights.  Further, if Vendor wishes to utilize
the  Intellectual  Property Rights in advertising or promotional  materials,  it
must submit such materials to HFS for final approval  before  utilizing them. In
no event may Vendor or any affiliated or associated person or entity utilize the
Intellectual  Property  Rights in connection with any products or services other
than the Products.  Vendor  further  acknowledges  that this  Agreement does not
create or grant any  rights in Vendor to use any  Intellectual  Property  Rights
owned or controlled by any Franchisee or its  affiliates,  nor does HFS have any
right to grant any such rights.

     Section 12. Relationship to Parties.  Vendor is an independent  contractor.
Neither  party  is the  legal  representative  or agent  of, or has the power to
obligate  (or have the right to  director  supervise  the daily  affairs of) the
other or any other party for any  purpose  whatsoever. HFS  and Vendor expressly
acknowledge  that the relationship  intended by them is a business  relationship
based entirely on and circumscribed by the express  provisions of this Agreement
and  that  no  partnership,  joint  venture,  agency,  fiduciary  or  employment
relationship is intended or created by reason of this Agreement.

     Section  13.  Assignments.  This  Agreement  may be freely  assigned by HFS
without  recourse.  This  Agreement  may not be assigned  by Vendor  without the
consent of HFS, which consent shall not be unreasonably withheld.

     Section 14.  Confidentiality.  (a) Vendor acknowledges that any information
regarding  this  Agreement,  the  transactions   contemplated  herein,  and  any
information conveyed to or obtained by Vendor in connection with this Agreement,
including, but not limited to information regarding Franchisees, is confidential
and proprietary to HFS and the  Franchisors  (the  'Confidential  Information').
Vendor agrees that in no event shall Vendor disclose, transfer, copy, duplicate,
or publish any  Confidential  Information  to any third party  without the prior
written consent of HFS, which consent may be withheld in HFS's sole  discretion;
provided,  however,  that no such consent shall be required for  disclosures  to
Vendor's attorneys, accountants, securities underwriters, and associated lending
institutions  which  disclosures are made during the ordinary course of Vendor's
business and which disclosures  shall be treated as confidential  information by
such parties.  Vendor further agrees that it shall not utilize any  Confidential
Information for any purpose  whatsoever other than for the purpose of performing
its  obligations  under this  Agreement.  Vendor shall only make  available  the
Confidential  Information  to its  employees  on a  need-to-know basis and shall
advise such employees on a need-to-know basis and shall advise such employees of
the  restriction  set  forth  with  respect  to  the  use of  such  Confidential
Information.  Vendor shall be responsible for the unauthorized disclosure of any
Confidential  Information by its employees.  Notwithstanding  anything contained
herein to the

                                      -8-





contrary,  Vendor may furnish,  in good faith,  information  pertaining  to this
Agreement to the applicable  authorities or agencies to the extent  necessary to
meet the requirements of (i) any applicable  Federal and state security laws and
regulations  or (ii) any  applicable  stock exchange organization or association
of securities  dealers in connection  with the offering of shares  of  stock  of
Vendor;  provided,  however,  that  Vendor  provides  HFS  with  a copy of  such
information in advance of such  disclosure and Vendor  reasonably  attempts,  in
good faith,  to secure  from such  parties  their  agreement  to  maintain  such
information in a confidential manner.

     (b) Vendor  acknowledges  that the  Confidential  Information is a valuable
asset of the  originating  party and that the  breach of this  Section  14 would
cause the  originating  party  irreparable  harm for which  there is no adequate
remedy at law.  Accordingly,  in the event of a breach or alleged breach of this
Section 14, the originating party or parties shall be allowed  injunctive relief
and any other equitable remedies in addition to remedies afforded by law.

     (c) The obligations of Vendor pursuant to this Section 14 shall survive the
termination of this Agreement.

     Section 15. Partial Invalidity.  Should any part of this Agreement, for any
reason, be declared invalid,  such decision shall not affect the validity of any
remaining portion of this Agreement.

     Section 16. No Waiver.  No failure or delay in requiring strict  compliance
with any obligation of this Agreement (or in the exercise of any right or remedy
provided  herein) and no custom or practice  at variance  with the  requirements
hereof  shall  constitute  a waiver  or  modification  of any  such  obligation,
requirement, right or remedy or preclude exercise of any such right or remedy or
the right to require strict  compliance with any obligation set forth herein. No
waiver of any  particular  default or any right or remedy  with  respect to such
default  shall  preclude,  affect or impair  enforcement  of any right or remedy
provided herein with respect to any subsequent  default.  No approval or consent
of HFS  shall be  effective  unless  in  writing  and  signed  by an  authorized
representative of HFS, and HFS's consent or approval may be withheld for so long
as Vendor is in default of any of its obligations under this Agreement.

     Section 17. Notices. Notices will be effective hereunder when and only when
they are reduced to writing and delivered,  by next day delivery  service,  with
proof of delivery,  or mailed by certified or registered  mail,  return  receipt
requested,  to the  appropriate  party at its  address  stated  below or to such
person and at such address as may be  designated  by notice  hereunder.  Notices
shall be deemed given on the date  delivered or date of attempted  delivery,  if
service is refused.

                                      -9-





Vendor:                                         HFS:
- -------                                         ----
ALL COMMUNICATIONS CORPORATION                  HFS INCORPORATED
1450 Route 22 West, Suite 103                   3838 East Van Buren
Mountainside, NJ 07092                          Phoenix, AZ 85008

Attn: President                                 Attn: Vice President
                                                      Reservations

     Section 18. Miscellaneous.  The remedies provided in this Agreement are not
exclusive.  This Agreement will be construed in accordance  with the laws of the
State of New Jersey, except for New Jersey's conflict of laws principles. Vendor
consents to the personal  jurisdiction  of the courts of the State of New Jersey
and the United States District Court for the District of New Jersey and  further
waives  objection to venue in any such court.  This Agreement is exclusively for
the benefit of the parties  hereto and may not give rise to liability to a third
party.  No  agreement  between HFS and anyone else is for the benefit of Vendor.
Neither  party will  interfere  with  contractual  relations  of the other.  The
section  headings in this  Agreement are for  convenience  of reference only and
will not affect its interpretation.

     This Agreement,  together with all instruments,  exhibits,  attachments and
schedules  hereto,  constitutes  the  entire  agreement  (superseding  all prior
agreements and  understandings,  oral or written  including without limiting the
Purchase  Agreement)  of the parties  hereto with respect to the subject  matter
hereof and shall not be  modified  or amended in any  respect  except in writing
executed by all such parties.

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first stated above.

                                            HFS INCORPORATED

                                            BY:   [SIGNATURE]
                                               ---------------------------------
                                               Vice President - Reservations
ATTEST:  [SIGNATURE]
       -----------------------
       (Assistant) Secretary

                                            ALL COMMUNICATIONS CORPORATION

                                            BY:  [SIGNATURE]
                                               ---------------------------------
                                               Vice President
ATTEST:  [SIGNATURE]
       -----------------------
       (Assistant) Secretary


                                      -10-






                                   EXHIBIT A

                   DESCRIPTION OF PRODUCTS & RELATED SERVICES
                              WITH PRICE SCHEDULE

     A description  of the Products  (hardware and software) with pricing is set
forth on Schedule A of this  Exhibit A (Pages A-1 through  A-4).  In addition to
the  pricing  identified  in  Schedule  A, the  National  Realty  Trust shall be
entitled to a five  percent  (5%)  discount  off all  purchases  of the Products
(excluding voice mail equipment and installation services).

     As part of the Products provided under this Agreement, Vendor shall provide
installation services. Such services and the cost relating thereto are set forth
in Schedule B of this Exhibit A (Page B-1).

     Vendor shall offer to the purchasing  Franchisees its standard  maintenance
service  contract  to  commence  after the  applicable  warranty  period for the
Products (See Exhibit C). A description  of the  maintenance  service  contracts
(including maintenance service contract forms) and the cost relating thereto are
set forth in Schedule C of this Exhibit A (Pages C-1).







                             EXHIBIT A (SCHEDULE A)
                       HARDWARE/SOFTWARE ANNEX/PRICE LIST
 


                                 CABINETS
 
                                                            
MODEL#      DESCRIPTION                                           PRICE
 
VB-43030    DBS 40 Port Cabinet                                   $  728.00
VB-43050    DBS 72 Port Cabinet                                   $1,196.00
VB-43060    DBS 96 Port Cabinet                                   $1,651.00
                          COMMON EQUIPMENT CARDS
VB-43412    CPC-AII                                               $  865.00
VB-43411    CPC-B                                                 $1,600.00
VB-43420    SCC-A                                                 $  199.00
VB-43421    SCC-B                                                 $  351.00
                                TRUNK CARDS
VB-43510    4 Circuit Loop Start Trunk Card                       $  249.00
VB-43511A   8 Circuit Loop Start Trunk Card                       $  377.00
VB-43531    8 Circuit Ground Start Trunk Card                     $  509.00
VB-43541    8 Circuit Direct Inward Dial (DID)
            Trunk Card                                            $1,274.00
                               STATION CARDS
VB-43611    8 Circuit Digital Station Card                        $  189.00
VB-43621A   8 Circuit Analog Station Card                         $  259.00
                             STATION EQUIPMENT
VB-41200    Digital Single Line Telephone-Gray                    $  101.00
VB-42210    16 Button Standard - Gray                             $  120.00
VB-42210B   16 Button Standard - Black                            $  120.00
VB-42211    16 Button Speakerphone-Gray                           $  160.00

 
                                      A-1
 





                                                            
VB-43220    22 Button Standard - Gray                             $  154.00
VB-43223    22 Button Display - Gray                              $  184.00
VB-4322B    22 Button Display - Black                             $  184.00
VB-43225    22 Button Large Screen Display
            Gray                                                  $  297.00
VB-43225B   22 Button Large Screen Display
            Black                                                 $  297.00
VB-43230    34 Button Standard - Gray                             $  182.00
VB-43233    34 Button Display - Gray                              $  292.00
VB-43233B   34 Button Display - Black                             $  292.00
VB-43310    24 Button Expansion Module-Gray                       $  159.00
VB-43320    72 Button DSS/BLF - Gray                              $  268.00
VB-43320B   72 Button DSS/BLF - Black                             $  296.00
                   STATION EQUIPMENT 44000 SERIES PHONES
VB-42210G   16 Button Standard-Gray                               $  124.00
VB-42210B   16 Button Standard-Black                              $  124.00
VB-42220G   22 Button Standard-Gray                               $  154.00
VB-42220B   22 Button Standard-Black                              $  154.00
VB-44223G   22 Button Display-Gray                                $  188.00
VB-44223B   22 Button Display-Black                               $  188.00
VB-44225G   22 button Large Screen Display-Gray                   $  301.00
VB-44225B   22 Button Large Screen Display-Blk                    $  301.00
VB-44230G   34 Button Standard-Gray                               $  186.00
VB-44230B   34 Button Standard-Black                              $  186.00
VB-44233G   34 Button Display-Gray                                $  296.00
VB-44233B   34 Button Display-Black                               $  296.00
VB-44310G   24 Button Expansion Module-Gray                       $  159.00
VB-44310B   24 Button Expansion Module-Black                      $  159.00
VB-44320G   72 Button DSS/BLF Gray                                $  268.00
VB-44320B   72 Button DSS/BLF Black                               $  268.00
VB-44100G   Analog Adapter-Large Screen Display
            Gray                                                  $   95.00
VB-44100B   Analog Adapter-Large Screen Display
            Black                                                 $   95.00

 
                                      A-2
 





                                                            
MODEL #     DESCRIPTION                                           PRICE
                              INTERFACE UNIT
VB-43431    DTMF Receiver                                         $  229.00
VB-2089P    SLT Ringer Box                                        $  110.00
VB-43702    Off Premise Extension (OPX) Adaptor                   $  195.00
VB-43708    Voice Announce Unit                                   $  481.00
VB-43701    Doorphone Adapter                                     $  149.00
VB-43706    Remote Administration Interface
            (RAI)A                                                $   69.00
VB-43707    Remote Administration Interface
            (RAI)B                                                $  150.00
VB-43705    Doorphone Unit (DPH)                                  $   42.00
VB-43703    Power Fail Transfer Unit (PFTU)                       $   64.00
VB-43110    Cable Connection Kit                                  $  995.00
VB-43120    Trunk Expansion Connector                             $   60.00
VB-43121    Extension Expansion Connector                         $   50.00
VB-43130    Battery Back-Up Unit                                  $  110.00
                      COMPUTER TELEPHONY INTERFACES
VB-43941    TSAPI Interface Kit                                   $1,820.00
VB-43720    TAPI Interface Kit                                    $  215.00
                            T-1 TRUNK INTERFACE
VB-43561    T-1 Trunk Card                                        $2,847.00
VB-43562    T-1 MDF Connector                                     $  240.00
VB-43563    T-1 Synchronization Unit                              $  637.00
VB-43564    T-1 Cable                                             $   81.00
                           CALLER I.D. INTERFACE
VB-43551    Caller I.D. Interface Board                           $  533.00

 
                                      A-3
 





                                                            
                           DBS 32 SYSTEM PRICING
VB-42050    DBS 32 Cabinet                                        $  403.00
VB-42450    CPC-S                                                 $  266.00
VB-42451    CPC-M                                                 $  533.00
VB-42651    208 Hybrid Expansion Card                             $  332.00
VB-43711    Doorphone Adapter                                     $  150.00
VB-43709    SLT Adapter                                           $  266.00
VB-42431    DTMF Receiver (MFRU)                                  $  133.00
VB-42712    Serial Interface Unit                                 $  199.00
VB-43130    Battery BackUp Unit                                   $  110.00
                            VOICE MAIL PRICING
Configuration A2 Port 30 Hour                                     $4,800.00
Configuration A4 Port 30 Hour                                     $5,852.00
Configuration B6 Port 100 Hour                                    $6,780.00
Configuration B8 Port 100 Hour                                    $7,432.00
Configuration B12 Port 100 Hour                                   $9,332.00

 
                                      A-4
 




                            EXHIBIT A (SCHEDULE B)
 
             NATIONAL INSTALLATION COST SCHEDULE FOR PANASONIC DBS
                             AND VOICE MAIL SYSTEMS
 
*Reuse existing cable $75.00 per station including RJ11C jacks
 
*New cable run $90.00 per station including RJ11C jacks
 
Installation, programming common equipment.
 

                                     
72            Port Cabinet                 $150.00
 
96            Port Cabinet                 $200.00
 
192           Port Cabinet                 $350.00
 
Training 1 Session                         N/C
 
Additional Training 1/2 day                $160.00
 
Add on work same as above
 
Post installation programming                  $60.00 per hour
 
Installation Cost schedule Voice Processing System
 
Voice Mail System                              2 Port $400.00
                                               4 Port $400.00
                                               6 Port $600.00
                                               8 Port $600.00
                                               12 Port $800.00

 
                                      B-1





[LETTERHEAD]


                                                                      Page of 


                                         QUOTATION/PURCHASE AGREEMENT

                       Date:                 Quotation No.
                       Company PO No:        Quotation Expires on:
                       Company Account No:   Taxable:
                       Salesperson:          Tax Exemption No:


SOLD TO:                          SHIPPED TO:
         Customer                  (Company)



                                                                 Phone:
Special Remarks:          Requested Delivery Date:        Shipping Method:
                        EXHIBIT A (SCHEDULE C)

ACC hereby quotes to Company the following:



- -----------------------------------------------------------------------------------------------
Item    Quantity    Model No.             Description               Unit Price     Amount
- -----------------------------------------------------------------------------------------------

                                                                   
                                MAINTENANCE AGREEMENT
                                All Communications Corporation
                                will service and maintain
                                your telephone system for
                                the price of $3.50
                                per phone per month. This
                                rate will not increase by
                                more than 5% per year for
                                the next year.

                                Your system is currently
                                equipped with ______ phones
                                leaving a monthly charge of
                                $______ per month and an annual
                                charge of $_____ per year plus
                                tax.

                                Under this Maintenance
                                Agreement, ACC agrees to:
                                Promptly respond to all
                                maintenance calls. Isolate the
                                trouble to the line or
                                equipment. Repair or replace the
                                equipment. Ensure the problems
                                are resolved by Telco carrier.
                                Check all Battery Back-Up System
                                annually

                                *Excluded from this agreement
                                are 'Acts of God' such as
                                lightning, flood, etc. as well
                                as Fire, Liquid Damage, Abuse of
                                Negligence

                                This agreement incorporates by
                                reference all terms and
                                conditions referred to in
                                Section 6 of the
                                Purchase/Maintenance Agreement.
      (illegible copy here)
- -----------------------------------------------------------------------------------------------




                                                  
Company:                                             All Communications:
By:                                                  By:


- ---------------------------------------              ---------------------------------------
        (Authorized Signature)                                (Authorized Signature)


Print Name:                                          Print Name:


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


Print Title:                Date:                     Print Title:                Date:


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





                                      C-1








                                   EXHIBIT B

                          PRODUCTS PURCHASE ORDER FORM

                                    BETWEEN

                              VENDOR & FRANCHISEE





                                   EXHIBIT B
                              TERMS AND CONDITIONS

                         PURCHASE/MAINTENANCE AGREEMENT

All Communications Corporation ('Seller'), with offices at 1450 Route 22 West,
Mountainside, N.J. 07092 and ___________________________________, ('Customer'),
with offices at _______________________________________________________________
Agree as follows:

1. PURCHASE OF THE SYSTEM PRICE AND PAYMENT TERMS

Seller agrees to sell and Customer agrees to buy the 'System' consisting of the
hardware ('Hardware') and ('Software') listed in the Hardware/Software
Annex.

The purchase price for the System and the services described in this
'Agreement' is the amount specified as the 'Purchase/Price' in the box
below. The initial installment and all subsequent installments of the
Purchase Price will be due and payable as described in the attached Payment
Schedule Annex. Seller's obligations under this Agreement are subject to
Seller's credit approval of Customer.

The initial installment of the Purchase Price must be paid to Seller by
Customer at the time Customer signs and delivers this Agreement to Seller.
All other installments will be invoiced upon the occurrence of the applicable
event that makes the installment due and payable. All other charges authorized
by this Agreement or by subsequent authorization of Customer will be invoiced
when incurred, or when specified in other sections of this Agreement, and
will be due and payable 30 days from the invoice date.

The Purchase Price does not include applicable taxes. In addition to the
Purchase Price Customer is responsible for the payment of all taxes applicable
to this sale or Seller's performance of this Agreement, except for any tax on
Seller's net income.

2. DELIVERY, INSTALLATION, TESTING AND ACCEPTANCE

The System will be installed at the 'Installation Site' (described above) by
Seller according to the Manufacturer's installation specifications and the
standard practices of the telecommunications industry. Customer shall allow
Seller's employees, representatives and subcontractors reasonable access to
the necessary premises for installation. Before and during installation
Customer is responsible to ensure the timely and adequate delivery,
installation and functioning of the electrical and telecommunications
connections and other environmental requirements, specified in Seller's
instructions, including those connections required for Customer's choice of
local and long distance telecommunications services.

If Customer causes a delay of the System, Customer shall be responsible for
storage and other costs incurred by Seller, and any installments of the Purchase
Price due after the delay shall be due and payable on the date specified in the
Project Schedule Annex. Additional charges may apply if Seller must perform
extra services or bear additional costs (such as overtime wages) because of an
unprepared Installation Site, or due to Customer's acts of omissions, or
conditions at the Installation Site about which Seller was not aware when it
signed this Agreement.

When the installation has been completed the System will be tested by Seller
according to the manufacturer's diagnostic and readiness test specifications and
Customer will notified when the System is ready to be placed into use
('Cutover'). Within 10 days after Cutover, Customer must either accept the
System or notify Seller in reasonable detail of the items and manner in which
the System does not materially comply with this Agreement. Seller shall promptly
correct any such items. Upon such correcting if Customer does not notify Seller
of any material non-compliance within such time, acceptance of the System shall
be deemed to occur. Customer shall not unreasonably withhold acceptance.





3. REGULATORY COMPLIANCE

The installation and the System shall comply in all material respects with
applicable federal, state and local laws and regulations in force on the
effective date of this Agreement. If any changes in laws or regulations become
effective after the effective date of this agreement which are applicable to the
System or installation when installed, Seller will comply with the new
requirements, and Customer agrees to pay Seller's then current labor and
material charges in connection with such compliance.

4. TRAINING

Seller shall provide Customer with its standard user training for the System at
no additional charge. The Standard user training for a given system type
consists of instructional materials, and may include training sessions with an
instructor. Other materials and training are available at an additional charge.

5. LIMITED WARRANTIES

Seller warrants that for 48 months after the date of Cutover ('Warranty
Period'): (a) the Hardware shall be free from equipment defects and faulty
workmanship. (b) the installation of the system shall conform to the
manufacturer's installation specifications (collectively
referred to as the 'Warranties') Warranties related to any additions to the
Hardware or Software installed during the Warranty Period shall terminate at
the end of the Warranty Period for the System.

Customer must notify Seller promptly of any claimed defect or failure of any of
the Warranties. The procedures for this are described in section 6, Maintenance
Service. Seller's sole obligation and Customer's exclusive remedy for any defect
or failure of any Warranty during the Warranty Period will be for Seller to
perform Maintenance Service. The fact that Seller performs any Maintenance
Service during the Warranty Period will not extend or restart the Warranty
Period.

The Limited Warranties described above in this section, and the remedies for a
failure, defect or breach of any of those limited warranties which are described
in Section 6 are exclusive. They are given to customer in lieu of all other
warranties, written or oral, statutory, express or implied, including without
limitation, the Warranties of merchantability and fitness for a particular
purpose, which seller specifically disclaims. The limited warranties may also be
voided by certain acts or omissions of customer described in detail in Section
6.

6. MAINTENANCE SERVICE

'Maintenance Service' consists of the repair or replacement, at Seller's option,
of malfunctioning Hardware. Seller may repair or replace malfunctioning Hardware
using either new or like new Hardware. Title to any replacement Hardware shall
pass to Customer upon installation, and title to the replaced Hardware shall
pass to the Seller at the same time.

A defect or failure that has a substantially adverse effect on the call
processing or other material capability of the system shall be deemed an
'Emergency'. If Seller is unable to remotely correct the defect or failure,
it shall dispatch a technician to the Installation Site within 2 hours of
Customer's request for Maintenance Service, without regard to the time of day
or day of the week. Maintenance Service for a defect or failure to the System
that is not an Emergency shall be performed by Seller between 8:00 AM and
5:00 PM, local time, Monday through Friday, except Seller holiday. If Seller
is unable to remotely correct a non-Emergency defect or failure, Seller shall
dispatch a technician to the Installation Site with 24 hours of Customer's
request for Maintenance Service, except when the request for non emergency
services is made on or the day before a weekend day or a holiday observed by
Seller, in which case a technician will be dispatched by Seller's next business
day. Customer must provide Seller with an access necessary to perform
Maintenance Service. A Report of a defect or failure of the System and request
for Maintenance Service may be made by Customer 24 hours a day, 7 days a week
by calling Seller's designated toll free maintenance hotline number.





    The limited Warranties specified in this Agreement may be voided and Seller
    will be relieved of its obligation to perform Maintenance Service if, during
    Warranty Period or subsequent Maintenance Service terms, Customer (a) fails
    to follow applicable operations, maintenance, or environmental requirements
    described in any of the manufacturer's manuals, Seller's manuals, and other
    materials provided to Customer, including without limitation manufacturer's
    product bulletins, (b) makes additions to, alters, modifies, enhances,
    repairs or disassembles the System (itself or using a third party), without
    Seller's written consent, (c) mishandles, abuses, misuses or damages the
    System (either itself or by others doing so), or (d) relocates the System
    without Seller's written consent (other than telephone instruments relocated
    in accordance with the manufacturer's specifications).

    Maintenance Service does not cover (a) damage to the System due to fire,
    explosion, power irregularities, power surges, Acts of God (including,
    without limitation, earthquakes, rains, floods or lightning), or any other
    cause not attributable to Seller, or (b) battery failures which occur
    following the Warranty Period, or wiring or cabling installed by persons
    other than Seller, or consumable supplies.

    If Customer requests Seller to perform Maintenance Service and (a) it was
    required as a result of any of the causes described in either of the two
    proceeding paragraphs, or (b) it is determined that a defect or failure of
    the System did not exist (e.g. the problem was caused by facilities provided
    by Customer's local or long distance carriers or service provides, or
    non-system equipment interfacing with the System), Seller reserves the right
    to charge Customer at Seller's then current time and material rates for any
    work performed and materials supplied as an additional charge.

 7. INDEMNITIES

    Each party shall indemnify the other with respect to any third party claim
    alleging bodily injury, including death, or damage to tangible property, to
    the extent such injury or damage is caused by the negligence or willful
    misconduct of the indemnifying party (except that in all cases Customer
    shall indemnify Seller with respect to any claim that the location where a
    telephone instrument, console or other device intended to be used by an
    individual user, including any wires or cables connected to it, was placed
    or installed was the cause of injury or damage).

    Seller shall also indemnify Customer with respect to any claim alleging that
    Customer's use of the System constitutes an infringement of any United
    States patent or copyright, if Seller has been notified and permitted to
    defend the suit as required by the following paragraph. If a court of
    competent jurisdiction issues an injunction against Customer prohibiting it
    from using the System because of such claim, Seller, at its option, shall
    either obtain for customer the right to continue using the System, or
    replace or modify the System so that Customer's use is not subject to the
    injunction. If Seller cannot either acquire the right to use the System or
    replace or modify it in a commercially reasonable and timely manner, then
    Customer's remedy is to return the System to Seller (after giving written
    notice to Seller and receiving instructions for the return). If the System
    is returned neither party shall have any further obligation or liability
    under this Agreement, except that Seller shall refund the depreciated
    value of the System (excluding the value of the wiring and cabling portion
    thereof) as carried on Customer's books at the time of such return. This
    indemnity shall not apply to claims arising in respect to the use of the
    System in a manner not contemplated under this Agreement, or if the claims
    are based on the use of the System in conjunction with products not
    provided to Customer by Seller. This Section 7 describes Seller's entire
    obligation with respect to any infringement claims.

    A condition precedent to any obligation of a party to indemnify shall be for
    the other party to promptly advise the indemnifying party of the claim and
    turn over its defense. The party being indemnified must cooperate in the
    defense or settlement of the claim, but the indemnifying party shall have
    sole control over the defense or settlement. If the defense is properly and
    timely tendered to the indemnifying party, then it must pay all litigation
    costs, reasonable attorney's fees, settlement payments and any damages
    awarded (but this may not be construed to require the indemnifying party to
    reimburse attorney's fees or related costs of the other party that the other
    party incurs either to fulfil its obligation to cooperate, or to monitor
    litigation being defended by the indemnifying party).






 8. RISK, TITLE, AND SECURITY AGREEMENT

    Title to the Hardware shall pass to Customer when the Purchase Price has
    been paid in full. Risk of loss or damage to the System or any of its
    components shall pass to Customer upon delivery to the Installation Site.
    Until Customer pays the Purchase Price in full, customer grants to Seller a
    purchase money security interest in the System and its proceeds. Seller's
    filing costs will be invoiced as an additional charge to Customer and
    Customer agrees to sign any financing statement or other document Seller
    considers necessary to protect Seller's rights under the security interest.


 9. CUSTOMERS'S OBLIGATIONS AND CONDITIONS OF PERFORMANCE

    In addition to the obligations described in this Agreement, Customer shall
    timely complete the tasks identified as its duties in the attached Project
    Schedule Annex.

    The Purchase Price is based in part upon the understanding that (a) Seller
    may use its own employees or subcontractors of its choosing to perform all
    or some of its services, and (b) those areas at the Installation Site where
    Seller's employees or subcontractors are required to work do not contain any
    asbestos or other hazardous material. If Seller is restricted by Customer in
    managing it utilization of employees or subcontractors, of if any asbestos
    or hazardous material exists at work sites, Seller may increase the Purchase
    Price to reflect increased costs and extend the time of performance to
    reflect reasonable additional time require to adjust for unanticipated
    activities. In addition, with respect to the presence of asbestos or other
    hazardous material. Customer must, at its own expense, have the materials
    removed or notify Seller to install the applicable portion of the System in
    areas at the Installation Site not containing such material. The Purchase
    Price does not include charges for doing installation work or performing
    other services outside Seller's normal working hours, except for Maintenance
    Service required for an emergency, or a Cutover scheduled for an evening or
    weekend in the Project Schedule Annex. If Customer asks that certain work or
    services be done outside of Seller's normal work hours, or takes other
    actions that require such work, then Seller may increase the Purchase Price
    to reflect Seller's then current charges for work during such hours.


10. DEFAULT AND REMEDIES

    If any material breach of this Agreement continues uncorrected for more than
    30 days after written notice from the aggrieved party describing the breach,
    the aggrieved party shall be entitled to declare a default and pursue any
    and all remedies available at law or equity. In addition, if Customer is the
    aggrieved party, Customer may suspend its payment obligation relation to the
    breach until Seller's breach is corrected, and if Seller is the aggrieved
    party, Seller may suspend performance of its obligations until Customer's
    breach is corrected.


11. FORCE MAJEURE

    Neither party shall be liable for delays, loss, damages or other
    consequences of acts, omissions or events beyond a party's control and which
    may not be overcome by due diligence, or caused by strikes or labor strife
    and unrest.


12. GENERAL

    A. Customer warrants that the person signing this Agreement for Customer is
       authorized to do so, and that Customer has obtained all internal and
       external approvals and resolutions necessary to enter into this Agreement
       and make the Agreement binding upon Customer.





    B. This Agreement constitute the entire agreement between the parties with
       respect to the described Transaction. It supersedes all prior
       negotiations, proposals, commitments, advertisements, publications or
       understandings of any nature, whether oral or written. Any amendment or
       modification to this Agreement and any waiver of rights under this
       Agreement must be in writing clearly intending to modify or waive rights
       under this Agreement that is signed by authorized representatives of both
       parties to be effective. In interpreting this Section it is agreed that
       any preprinted or added terms and conditions in a purchase order form or
       like forms used by Customer to implement or change System or product
       orders under this Agreement are void with respect to this Agreement, even
       if acknowledged in writing by Seller.

    C. If any provision of this Agreement is held invalid, the remaining
       provisions shall continue in full force and effect and the parties shall
       substitute for the invalid provision a valid provision which most closely
       approximates the economic effect and intent of the invalid provision.

    D. If Seller delivers additional Hardware of Software, or provides time and
       material maintenance or other incidental services relating to the System,
       the terms of this Agreement will govern, subject to Sellers price quotes,
       unless there is a separate written agreement between the parties covering
       those items.

    E. Unless limited by other sections of this Agreement, either party may
       assign or otherwise transfer this agreement and its rights and
       obligations under this Agreement upon written notice to the other party,
       except that no such assignment or other transfer shall relieve a party
       from primary responsibility for its performance in accordance with this
       Agreement.

    F. A failure by either party to exercise its rights under this Agreement
       shall not be a waiver.

    G. This Agreement shall be governed by the laws of the state in which the
       Installation Site is located.

    H. This Agreement is not effective or binding upon Seller and does not
       constitute an offer subject to being accepted by Customer until it has
       been executed by a duly authorized representative of Seller. The
       effective date of this Agreement shall be the date of Seller's execution
       of this Agreement. Seller may deposit any check tendered by Customer, but
       if Seller elects not to execute this Agreement, Seller shall promptly
       refund such amount to Customer. Any such deposit may not be construed as
       an acceptance or agreement by Seller to this Agreement becoming
       effective.


The following annexes and addendum are attached to and made a part of this
Agreement.


Hardware/Software Annex
Project Schedule Annex
Payment Schedule Annex


INSTALLATION SITE_______________________________________________________________

_____________________________________________PURCHASE PRICE $___________________

ACCEPTED BY ALL COMMUNICATIONS CORP. DATE    ACCEPTED BY (CUSTOMER)     DATE

_________________________________________    _________________________  ________
By (Authorized Signature)                    By (Authorized Signature)

_________________________________________    ___________________________________
Name (Type or Print)                         Name (Type or Print)

_________________________________________    ___________________________________

Title ___________________________________    Title _____________________________







                                   EXHIBIT C

                               PRODUCTS WARRANTY

Warranty:  Vendor warrants for the applicable warranty period (as defined below)
that the Products  (including  voice mail equipment)  shall be free from defects
and faulty workmanship and the installation of the Products shall conform to the
manufacturer's installation specifications.

Warranty  Period:  The warranty  period for the Products  (including  voice mail
equipment)  shall  be for a period  of 24  months  from  the  date on which  the
Products  is ready  for use;  provided,  however,  that  for  sales  made to the
National Realty Trust the warranty period for the Products (excluding voice mail
equipment)  shall  be for a period  of 48  months  from  the  date on which  the
Products are ready for use (24 months for voice mail equipment).

Warranty Remedy:  Vendor shall correct any failure,  defect or non-conformity by
repair or  replacement of the Products  (including the voice mail  equipment) at
Vendor's cost and expense.