Exhibit 2.2




                          SECURED BRIDGE FINANCING NOTE


                                                            Bellevue, Washington
                                                                   April 3, 1998


         1. FOR VALUE RECEIVED,  CAMBIO NETWORKS, INC., a California corporation
(the  "Borrower"),  promises to pay to the order of  MEADOWBROOK  REHABILITATION
GROUP,  INC., a Delaware  corporation  (the  "Holder"),  the  principal sum (the
"Principal Sum") of Five Hundred Thousand Dollars  ($500,000),  or, if less, the
aggregate  principal  amount  of all  outstanding  borrowings  made by Holder to
Borrower  for current  operating  expenses  of  Borrower  pursuant to Schedule 1
attached hereto and made a part hereof.  Borrower  promises to pay interest from
the date hereof on the advanced and unpaid  amount of such  Principal Sum and on
any accrued,  unpaid and overdue  installments of interest,  on the dates and at
the rate of interest hereinafter set forth.

         2. Term.  Unless  accelerated  pursuant to the terms of this Note,  the
unpaid portion of the Principal Sum and all accrued and unpaid interest  thereon
shall be due and payable in full on the date (the  "Maturity  Date") that is the
earlier to occur of (i) the date on which the Agreement and Plan of Merger among
Holder,  Borrower and Interset, Inc. dated as of April 3, 1998 closes; (ii) July
31, 1998;  (iii) the date on which Borrower  closes any equity or debt financing
in excess of $50,000  subsequent to the date hereof;  (iv) the date on which all
or any  significant  portion of the assets or business  of Borrower  are sold or
otherwise  transferred;  or (v) the date on which  there  occurs any  "change in
control"  of  Borrower  (defined  as a  sale  or  other  transfer,  directly  or
indirectly,  of 30% or more of the  beneficial  voting or  economic  interest of
Borrower).

         3.  Interest.  Interest,  which  shall be  computed on the basis of the
actual number of days elapsed,  shall accrue  monthly on the advanced and unpaid
amount of the Principal  Sum and on any then accrued and unpaid  interest at the
rate of eight percent  (8.0%) per annum until the Maturity  Date,  increasing by
and additional  fifty (50) basis points at the end of each month  thereafter for
so long as this Note is outstanding.

         4. Place of Payment and Notice.  Payments on this Note,  as well as any
notices to Holder,  are to be mailed or given to Holder at 2000  Powell  Street,
Suite 1203,  Emeryville,  California 94608, or to such other place as Holder may
from time to time direct by written  notice to Borrower.  The address for notice
to Borrower shall be 154 SE 30th Place, Suite 200,  Bellevue,  Washington 98007,
or to such  other  place as  Borrower  may from time to time  direct by  written
notice to Holder.

         5. Representations of Borrower. Borrower hereby represents and warrants
to Holder that (a) Borrower is a corporation duly organized and validly existing
in good standing under the laws of the State of California; (b) Borrower has all
necessary  corporate  power and  authority  to execute,  deliver and perform its
obligations under this Note and consummate the transactions contemplated hereby;
and  (c)  the  execution,   delivery  and  performance  of  this  Note  and  the
consummation of the transactions  contemplated  hereby have been duly authorized
by all necessary  corporate action on the part of Borrower and do not violate or
conflict with, or, with or without the giving of notice,  the passage of time or
both, constitute a default under,  Borrower's charter documents,  any law, rule,
regulation,  order,  writ,  injunction  or decree of any  court,  administrative
agency or any other governmental  authority applicable to Borrower or any of its
properties or any  agreement,  instrument  or commitment to which  Borrower is a
party or by which Borrower or any of its property is bound.

         6. Lawful Tender.  All amounts payable  hereunder shall be payable only
in lawful money of the United State of America.  Each payment received by Holder
under  this Note  shall be applied  first to the  payment of accrued  but unpaid
interest due hereunder and second to the Principal  Sum. If any  installment  or
payment on this Note shall be due on  Saturday,  Sunday or a day which is a bank
holiday in the State of  California,  such payment  shall be extended  until the
following business day with accrued interest.

         7. Prepayment. Borrower may make prepayments to Holder of the Principal
Sum at any time, in whole or in part, without premium or penalty.

         8.       Default.

         (a) An  "Event  of  Default"  shall  exist  if any  one or  more of the
following  events  (collectively,  "Events  of  Default")  shall  occur  and  be
continuing:

                  (i)   Borrower   shall  fail  to  pay  when  due  (whether  by
acceleration or otherwise) any payment of principal or of interest on this Note,
and such failure continues for a period of five (5) days;

                  (ii) Any  representation  or warranty  made by Borrower  under
this Note shall prove to be untrue or inaccurate  in any material  respect as of
the date on which such representation or warranty is made;

                  (iii)  Default  shall occur in the  performance  of any of the
covenants  or  agreements  of Borrower  contained  herein  (other  than  payment
defaults),  which is not  remedied  within  thirty  (30) days after  delivery of
written notice to Borrower from Holder;

                  (iv)  Default  shall  occur  in the  payment  of any  material
indebtedness  of Borrower (or default  shall occur in respect of any note,  loan
agreement or credit agreement relating to such indebtedness or such indebtedness
shall  become due before its stated  maturity by  acceleration  thereof or shall
become due by its terms and shall not be promptly paid or extended) or a default
shall occur under any material  agreement of  Borrower,  and such default  shall
continue for more than the period of grace, if any, specified therein;

                  (v) Borrower or any subsidiary  shall (A) apply for or consent
to the appointment of a receiver, trustee, custodian or liquidator or itself, of
all or  substantially  all of its  assets,  (B)  file a  voluntary  petition  in
bankruptcy, admit in writing that such person is unable to pay its debts as they
become  due or  generally  not pay such  debts as they  become  due,  (C) make a
general  assignment for the benefit of creditors,  (D) file a petition or answer
seeking reorganization of any arrangement with creditors or to take advantage of
any bankruptcy,  reorganization or insolvency proceeding,  or (E) take corporate
action for the purpose of affecting any of the foregoing;

                  (vi) An  involuntary  petition  or  complaint  shall  be filed
against Borrower or any subsidiary  seeking bankruptcy or reorganization of such
person or the  appointment  of a receiver,  custodian,  trustee or liquidator of
such person,  or all or substantially  all of such person's assets, or an order,
order for relief,  judgment or decree shall be entered by any court of competent
jurisdiction  or other  competent  authority  approving a petition or  complaint
seeking reorganization of Borrower or any subsidiary,  or appointing a receiver,
custodian,  trustee or liquidator of such person, or of all or substantially all
of such person's assets,  and, in each case, such petition,  order,  judgment or
decree  shall not have  been  dismissed  within  sixty  (60) days of the  filing
thereof; or

                  (vii) Any final judgment(s) for the payment of money in excess
of the sum of $50,000 in the aggregate  shall be rendered  against  Borrower and
such judgment or judgments  shall not be satisfied or  discharged  within thirty
(30) days of the date on which any such judgment is issued.

         (b) If an Event of Default shall have occurred and be continuing,  then
Holder may declare the unpaid  Principal  Sum of, and all interest  then accrued
but unpaid on, this Note and any other liabilities hereunder to be forthwith due
and payable,  whereupon the same shall forthwith  become due and payable without
presentment,  demand,  protest,  notice of default, notice of acceleration or of
intention  to  accelerate  or other  notice of any kind,  all of which  Borrower
hereby expressly waives.

         (c) Each right,  power or remedy of Holder upon the  occurrence  of any
Event of Default as provided  for in this Note or now or  hereafter  existing at
law or in equity or by statute shall be cumulative  and  concurrent and shall be
in addition to every other right,  power or remedy  provided for in this Note or
now or hereafter existing at law or in equity or by statute, and the exercise or
beginning of the exercise by Holder of any one or more of such rights, powers or
remedies shall not preclude the  simultaneous or later exercise by Holder of any
or all such other rights, powers or remedies.

         (d) Upon the occurrence of an Event of Default,  Borrower agrees to pay
all  costs  and  expenses  (including  Holder's  attorneys'  fees and  expenses)
reasonably  incurred by Holder in connection  with the collection of amounts due
hereunder or the preservation and enforcement of Holder's rights  hereunder,  or
relating to any reorganization or workout in connection herewith.

         9. CONSENT TO  JURISDICTION.  BORROWER  HEREBY AGREES AND CONSENTS THAT
ANY ACTION,  SUIT OR  PROCEEDING  ARISING OUT OF THIS NOTE MAY BE BROUGHT IN ANY
APPROPRIATE  FEDERAL OR STATE COURT IN THE STATE OF CALIFORNIA,  OR IN ANY OTHER
COURT HAVING JURISDICTION OVER THE SUBJECT MATTER, ALL AT THE SOLE AND EXCLUSIVE
ELECTION  OF  HOLDER,  AND BY THE  ISSUANCE  AND  EXECUTION  OF  THIS  NOTE  AND
ACCEPTANCE  OF  THE  LOAN  PROCEEDS   BORROWER   IRREVOCABLY   CONSENTS  TO  THE
JURISDICTION AND VENUE OF EACH SUCH COURT AND HEREBY IRREVOCABLY  WAIVES, TO THE
FULLEST  EXTENT  PERMITTED BY LAW, ANY  OBJECTION  WHICH IT MAY NOW OR HEREAFTER
HAVE TO THE LAYING OF VENUE IN ANY SUCH COURT.

         10.  Waiver.  No failure to  exercise  and no delay in  exercising  any
right, power or privilege hereunder shall operate as a waiver thereof, nor shall
any  single or  partial  exercise  of any right,  power or  privilege  hereunder
preclude any other right, power or privilege. Amendments or waivers to this Note
may be made only in a written instrument executed by Borrower and Holder.

         11.  Headings.  The  headings  in  this  Note  are for  convenience  of
reference only and do not constitute part of this Note.

         12.  Maximum  Interest.  The  provisions  of  this  Note  shall  not be
construed as requiring or  committing  Borrower to pay interest in excess of the
highest rate permitted by applicable  law. If a court of competent  jurisdiction
should  determine  that  Holder has  received  interest in excess of such lawful
rate, such excess shall be applied to the reduction of the unpaid  Principal Sum
due hereunder and not to the payment of interest.

         13. Grant and Perfection of Security  Interest.  In order to secure the
due and punctual  payment of the sums due  hereunder,  Borrower  hereby  grants,
transfers,  conveys  and  assigns  to  Holder,  and  grants to Holder a security
interest in, Borrower's  presently existing or hereafter acquired rights,  title
and  interest in all of its tangible and  intangible  property,  whether real or
personal,   including,   without  limitation,  all  Accounts,  Contract  Rights,
Inventory,  Equipment,  General  Intangibles,  Chattel Paper,  Deposit Accounts,
Goods,  Documents,  Instruments  and  Proceeds  (each as defined in the  Uniform
Commercial Code) of the foregoing  (collectively,  the  "Collateral");  provided
however,  that Holder's security interest in the Collateral shall be subordinate
to all security  interests in the  Collateral  granted by Borrower and perfected
prior to the date hereof.

         14.  Attorneys'  Fees.  Should any  litigation  or other  proceeding be
commenced by Borrower or Holder  concerning  this Note, or the rights and duties
of the parties in relation  to this Note or any matter in  connection  herewith,
the party  prevailing in such litigation or other  proceeding shall be entitled,
in addition to such other  relief as may be granted,  to recover its  reasonable
attorneys'  fees and costs incurred in connection  with such litigation or other
proceeding.

         15.  Further  Assurances.  From time to time after the date  hereof and
without further consideration, Borrower will execute and deliver, or arrange for
the execution and delivery of such other  instruments of conveyance and transfer
or other  instruments or documents and take or arrange for such other actions as
may  reasonably  be  requested  by  Holder  to  complete  more  effectively  the
transactions  contemplated  hereby,  including,  without  limitation,  as may be
necessary to implement the provisions of Section 13 above.

         16.  Governing  Law.  THIS NOTE SHALL BE GOVERNED BY AND  CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF CALIFORNIA.

         IN WITNESS WHEREOF, the undersigned Borrower has caused this Note to be
duly executed on the date of issue above stated.

                                                        BORROWER:

                                                        CAMBIO NETWORKS, INC.,
                                                        a California corporation


                                                        By /s/ Gari Grimm

                                                        Its President & COO

Address:

154 SE 30th Place, Suite 200
Bellevue, Washington 98007