EXHIBIT 10.22



                            CREDIT FACILITY AGREEMENT
                                       AND
                                 PROMISSORY NOTE


     This CREDIT FACILITY  AGREEMENT (the "Agreement") is made as of February 3,
2000 between Netrix  Corporation  (the  "Borrower") and Steven T. Francesco (the
"Lender").


SECTION 1.  AMOUNT AND TERMS OF THE CREDIT FACILITY

     1.1 THE CREDIT FACILITY

     Subject to the terms and conditions of this Agreement and the Note (as such
term is defined in Section 1.2 below),  the Lender  agrees to make  available to
the Borrower a credit  facility  (the  "Facility")  under which the Borrower may
from time to time on or after the date hereof to and  including  the  Expiration
Date (as such term is defined in Section  2.3 below)  borrow from the Lender any
amount  up to but not to exceed  $10,000,000  in the  aggregate  at any one time
outstanding  (exclusive  of  interest,  fees or  other  charges  payable  by the
Borrower  under this  Agreement  and Note).  Borrowings  under the  Facility are
herein referred to collectively as the "Loans" and individually as a "Loan". The
Borrower  may use  the  Facility  by  borrowing,  repaying  and  reborrowing  in
accordance  with the terms and conditions of this  Agreement and the Note.  Each
request for a Loan may be made upon ten business  days' notice.  Each Loan shall
be deemed to be a  representation  and  warranty by the  Borrower on the date of
such Loan  that  immediately  prior to and after the  making of such Loan (i) no
Event of Default (as described in Section 2.1 below),  or event which,  with the
giving  of  notice  or  lapse  of time or both,  would  become  such an Event of
Default,  shall have  occurred and be  continuing  and (ii) no material  adverse
change in the financial condition, assets, business,  operations or prospects of
the Borrower shall have occurred,  and the truth and  correctness of each of the
foregoing  representations  when  deemed made is a  condition  precedent  to the
Lender's obligation to make such Loan.

     1.2 THE NOTE

     On or prior to the date on which the Lender  makes the initial  Loan to the
Borrower  under the  Facility,  the  Borrower  shall  execute and deliver to the
Lender the promissory note (the "Note") which follows this Agreement.

     The initial Loan and all subsequent Loans, and each payment made on account
of the principal thereof, shall be endorsed on the Note as of the date such Loan
is made or such payment is received by the Lender in immediately available funds
as provided in the Note. The Note shall be used to record all Loans and payments
of principal made under the Facility.

     1.3 VOLUNTARY PREPAYMENTS

     The  Borrower may prepay the Note in whole at any time or in part from time
to time without premium or penalty.  Partial prepayments of the Note shall be in
a minimum principal amount of $10,000 or any whole multiple thereof.






     1.4 FINANCIAL INFORMATION

     The Borrower  hereby agrees to provide such  financial  information  to the
Lender as the Lender may reasonably request from time to time.


SECTION 2.  TERMINATION OF THE FACILITY

     2.1 EVENTS OF DEFAULT

     If the  Borrower  fails  to  perform  any  agreement  herein  contained  or
contained  in any other  agreement  with the Lender or if default  occurs in the
punctual  payment of any sum payable under the Note, this Agreement or any other
obligation of the Borrower to the Lender,  or if any  representation or warranty
deemed made  pursuant to Section 1.1 above shall be untrue or  incorrect  in any
respect,  or if any event described in paragraph 3 of the Note occurs;  then the
Facility  shall  automatically  terminate  and all Loans,  although not yet due,
shall become immediately due and payable without notice or demand.

     2.2 TERMINATION OR REDUCTION OF COMMITMENT

     The Borrower shall have the right, upon prior written notice to the Lender,
to  terminate  the  Facility in whole at any time or to reduce the amount of the
Facility  provided in Section 1.1 in part from time to time,  provided  that (a)
any  termination  of the Facility shall be accompanied by payment in full of the
unpaid principal amount of the Note, together with interest accrued thereon, and
(b)  partial  reductions  of the  Facility  shall be in the  minimum  amount  of
$25,000, and shall be accompanied by prepayment,  together with interest accrued
thereon to the date of the prepayment, to the extent, if any, that the aggregate
unpaid principal amount of the Note exceeds the Facility as then reduced.

     2.3 EXPIRATION DATE

     Unless  specifically  extended  by  the  Lender  in  writing  or  otherwise
terminated  under  Section 2.1 or Section 2.2, the Facility  shall expire on the
earlier of (x) May 30, 2001 or (y) the date  Borrower  raises  $10.0  million or
more through the sale of equity  securities  (the  "Expiration  Date"),  and all
amounts  outstanding  under this Agreement and the Note shall be due and payable
on the Expiration Date.


SECTION 3.  MISCELLANEOUS

     3.1 NO WAIVER

     The Borrower agrees that no failure to exercise and no delay in exercising,
on the part of the Lender, any right, power or privilege under this Agreement or
the Note  shall  operate  as a waiver  thereof;  nor shall any single or partial
exercise  of any right,  power or  privilege  under this  Agreement  or the Note
preclude  any other or further  exercise  thereof or the  exercise  of any other
right, power or privilege. The rights and remedies provided under this Agreement
and the Note are cumulative and not exclusive of any rights or remedies provided
by law. No  modification  or waiver of any  provision  of this  Agreement or the
Note, or any consent to any departure by the Borrower from the provisions hereof
or  thereof,  shall be  effective  unless the same shall be in writing  from the
Lender and then such waiver or consent  shall be effective  only in the specific
instance  and for the purpose for which it is given.  No notice to the  Borrower
shall  entitle the  Borrower to any other or further  notice in other or similar
circumstances unless expressly provided for herein. No course of dealing between
the Borrower  and the Lender  shall  operate as a waiver of any of the rights of
the Lender under this Agreement or the Note.


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     3.2 SUCCESSORS AND ASSIGNS

     The Lender may at any time and from time to time sell, assign,  transfer or
otherwise  dispose  of all or any  portion  of this  Agreement,  the Note or the
Lender's  interest herein and the Lender may furnish any information  concerning
the  Borrower  in  the  possession  of the  Lender  from  time  to  time  to its
transferees or assignees (including prospective  transferees or assignees).  The
Borrower may not assign or transfer its rights or obligations  hereunder without
the prior written consent of the Lender.

     3.3 EXPENSES

     The  Borrower  agrees to  reimburse  the  Lender on demand  for all  costs,
expenses and charges (including, without limitation, fees and charges of counsel
and  costs   allocated  by  internal  legal  counsel)  in  connection  with  the
preparation or  modification  of this  Agreement and the Note; the  performance,
collection  or  enforcement  of this  Agreement or the Note;  or, the defense or
prosecution of any rights of the Lender pursuant to this Agreement or the Note.

     3.4 GOVERNING LAW

     This  Agreement  shall be governed by and construed in accordance  with the
laws of the Commonwealth of Virginia.

     3.5 NOTICE

     All notices,  requests,  demands, claims and other communications hereunder
shall be in writing. Any notice,  request,  demand, claim or other communication
hereunder  shall be deemed dully given if (and then two business  days after) it
is sent by registered  or certified  mail,  return  receipt  requested,  postage
prepaid and addressed to the intended recipient as set forth below:

      If to the Borrower      Netrix Corporation
                              13595 Dulles Technology Drive
                              Herndon, Virginia  20171
                              Attention:  Chairman
                              Telephone:  (703) 742-6000
                              Facsimile:  (703) 793-2060

      If to the Lender        Steven T. Francesco
                              c/o Netrix Corporation
                              13595 Dulles Technology Drive
                              Herndon, Virginia  20171
                              Telephone:  (703) 742-6000
                              Facsimile:  (703) 793-2060

     Either the  Borrower  or the Lender may send any notice,  request,  demand,
claim or other communication  hereunder to the intended recipient at the address
set forth above using personal delivery,  expedited courier,  messenger service,
telecopy or ordinary mail, but no such notice,  request,  demand, claim or other
communication  shall be  deemed  to have been  duly  given  unless  and until it
actually is  received  by the  intended  recipient.  Either the  Borrower or the
Lender may change the address to which notices,  requests,  demands,  claims and
other communications  hereunder are to be delivered by given the other notice in
the manner set forth in this paragraph,  provided that no such change of address
shall be effective until it actually is received by the intended recipient.

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     3.6 ENTIRE AGREEMENT

     This  Agreement  (including  the Note)  constitutes  the  entire  agreement
between the Borrower  and the Lender and  supersedes  any prior  understandings,
agreements or representations by or between the Borrower and the Lender, written
or oral, to the extent they related in any way to the subject matter hereof.

     The Borrower  and the Lender have caused this  Agreement to be signed as of
the date first written above.



                                          NETRIX CORPORATION


                                          By:  /s/ Peter J. Kendrick
                                             -----------------------------------

                                          Title:  Chief Financial Officer
                                                --------------------------------



                                                  /s/ Steven T. Francesco
                                                --------------------------------
                                                      Steven T. Francesco


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                                PROMISSORY NOTE

                                                                 Viena, Virginia


$ ----------------                         ----------------------,-------------,

     1. On the  Expiration  Date (as such term is defined in Section  2.3 of the
Credit  Facility  Agreement of even date  herewith  between the Borrower and the
Lender  (the  "Agreement")),   FOR  VALUE  RECEIVED,   Netrix  Corporation  (the
"Borrower")  promises to pay to the order of Steven T.  Francesco (the "Lender")
at his  address  provided  in the  Agreement,  in  United  States  dollars,  the
aggregate  unpaid  principal  amount of all Loans  (as such term is  defined  in
Section 1.1 of the Agreement) made by the Lender to the Borrower as shown on the
schedule attached hereto and made a part hereof (the "Schedule"),  together with
interest  (calculated  on the basis of a 360 day year for the  actual  number of
days  elapsed)  on the  unpaid  principal  amount  thereof  from  time  to  time
outstanding  at a rate per annum  equal to 5% above the prime  rate of  interest
published by THE WALL STREET JOURNAL from time to time as the prime rate, but in
no event in  excess  of the  maximum  rate  permitted  by  applicable  law.  Any
principal  amount  hereof  which is not paid when due  (whether  as  stated,  by
acceleration  or  otherwise)  shall bear interest for each day during the period
from and including the due date to the date of payment in full thereof at a rate
per annum equal to 2% above the rate in effect on such day. The Borrower  agrees
that interest  shall be payable on the last business day of each calendar  month
commencing on the first such date  occurring  after the date of this Note and on
any payment of  principal.  Any change in the  interest  rate  resulting  from a
change in the prime rate shall become effective as of the opening of business on
the day on which such change in such prime rate  occurs.  If any  payment  under
this Note  becomes due and  payable on a Saturday,  Sunday or other day on which
commercial Lenders are authorized to close under the laws of the Commonwealth of
Virginia, the maturity thereof shall be extended to the next succeeding business
day and interest  thereon  shall be payable at the  applicable  rate during such
extension.

     2. The Lender shall,  and is hereby  authorized by the Borrower to, endorse
on the Schedule and any continuations  thereof appropriate notations to evidence
the date and  principal  amount  of each  Loan and the date and  amount  of each
payment of principal  on the date such Loan is made or a payment in  immediately
available funds is received; provided that the Lender's failure to make any such
notation  shall not limit or otherwise  affect the  obligations  of the Borrower
hereunder  or under the  Agreement.  This Note shall be used to record all Loans
and payment of principal  made  hereunder and it shall  continue to be used even
though  there may be periods  when no amount of  principal  or interest is owing
hereunder. The Schedule and all continuations thereof shall be conclusive in the
absence of manifest error.

     3. If any of the  following  events of default  shall occur with respect to
the Borrower:  (a) the Borrower  shall fail to pay the principal of, or interest
on, this Note, or any other amount payable under this Note or the Agreement,  as
and when due and payable; (b) any representation or warranty made or deemed made
by the Borrower in this Note or in the  Agreement,  or which is contained in any
certificate,  document,  opinion,  financial or other statement furnished at any
time under or in connection with any this Note or the Agreement,  shall prove to
have been incorrect in any material  respect on or as of the date made or deemed
made;  (c) the Borrower  shall fail to perform or observe any term,  covenant or
agreement  contained in any Note or the Agreement on its part to be performed or
observed;  (d) the  Borrower  or shall  fail to pay  when  due any  indebtedness
(including but not limited to  indebtedness  for borrowed  money) or if any such
indebtedness  shall become due and payable,  or shall be capable of becoming due
and payable at the option of any holder thereof, by acceleration of its maturity
or if there shall be any default by the Borrower under any agreement relating to
such indebtedness; (e) the Borrower shall dissolve or for any reason cease to be
in existence;  or (f) the Borrower is involved in a proceeding  which may result
in a  forfeiture  of all or a  substantial  part of the  Borrower's  assets or a
material  judgment is entered  against the Borrower;  THEN, in any such case, if
the Lender shall elect by notice to the Borrower, the unpaid principal amount of
this Note and all Loans made hereunder,  together with accrued  interest,  shall
become  forthwith due and payable;  the unpaid principal amount of this Note and
all Loans made  hereunder,  together with accrued  interest,  shall  immediately
become due and payable without any notice or other action by the Lender.

     4. This Note is the Note referred to in the Agreement and is subject to the
terms and  conditions  thereof,  is entitled to the benefits  thereof and may be
prepaid as provided therein.

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     5. This Note shall be governed by and construed in accordance with the laws
of the Commonwealth of Virginia.


                                    NETRIX CORPORATION



                                    BY:_________________________________________


                                    TITLE:______________________________________


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                          SCHEDULE OF LOANS AND PAYMENT


===============================================================================
                                                 AGGREGATE
                                                 PRINCIPAL
     DATE                                         BALANCE         NOTATION
      OF                         AMOUNT OF       REMAINING          MADE
     LOAN       AMOUNT OF LOAN    PAYMENT         UNPAID             BY
===============================================================================






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