Exhibit 10.27

                                MICROFRAME, INC.
                               21 Meridian Avenue
                            Edison, New Jersey 08820






                                                     April 9, 1998


CONFIDENTIAL
------------

SolCom Systems Limited
SolCom House
Meikle Road
Kirkton Campus
Livingston EH547DE
Scotland

SolCom Systems, Inc.
1801 Robert Fulton Drive
Suite 400
Reston, Virginia 20191

Shareholders of SolCom Systems Limited
set forth on Signature Page hereto

Gentlemen:

               MicroFrame,  Inc.,  a New Jersey  corporation  ("MicroFrame")  is
pleased to present to you this  Letter of Intent  with  respect to  MicroFrame's
interest  in  acquiring,  as set  forth  in  Sections  1  through  6 below  (the
"Transaction"),  all of the  outstanding  stock of  SolCom  Systems  Limited,  a
corporation  organized  under the laws of  Scotland  (the  "Parent")  and SolCom
Systems, Inc., a Delaware corporation and wholly-owned subsidiary of SolCom (the
"Subsidiary" and together with the Parent, "SolCom").

                                                                                

<PAGE>



                The  following  Sections  1 through  5 of this  Letter of Intent
reflect our  current  mutual  understanding  of the  matters  described  therein
(collectively,  the "Non-Binding Provisions").  Except as set forth in Section 6
hereof, none of the provisions set forth herein shall be binding upon any of the
parties hereto,  and none of the parties to this Letter of Intent shall have any
liability to any other party based upon,  arising from or relating to any of the
Non-Binding Provisions.

               The  terms  of our  proposal  regarding  the  Transaction  are as
follows:

         1.    Basic  Transaction.  MicroFrame  or a  newly-formed  wholly-owned
               subsidiary   corporation  of  MicroFrame  would  acquire  all  or
               substantially  all of the outstanding  capital stock or assets of
               SolCom through a statutory merger or other acquisition structure.
               The  parties  will  consult  with  their  respective   attorneys,
               accountants  and  advisors  for the  purpose of  entering  into a
               definitive  merger  agreement  or  other  applicable   definitive
               agreement  together  with  any  other  necessary  or  appropriate
               agreements or instruments (collectively referred to herein as the
               "Merger  Agreement").  In  structuring  the  Transaction  and the
               Merger Agreement,  the parties would seek to qualify for "pooling
               of interest"  accounting treatment and would seek to minimize any
               taxes  applicable to the  Transaction or to the parties and their
               respective  affiliates and  subsidiaries  after the completion of
               the Transaction,  including, but not limited to, the treatment of
               the Transaction as a tax-free  reorganization under United States
               and United  Kingdom laws,  the reduction or elimination of income
               taxes,  capital  gains  taxes  and  withholding  taxes,  and  the
               utilization  and  preservation  of  tax  attributes   (e.g.,  net
               operating  losses and foreign tax credits)  arising  prior to and
               subsequent to completion of the  Transaction.  In connection with
               the  Transaction,  MicroFrame may elect to  reincorporate  in the
               State of Delaware.

         2.    Issuance  of  MicroFrame  Common  Stock.  At the  closing  of the
               Transaction  pursuant to the Merger  Agreement  (the  "Closing"),
               MicroFrame would issue to the  shareholders and  optionholders of
               SolCom that number of shares of common stock of  MicroFrame,  par
               value $.001 per share (the  "Common  Stock"),  or, in the case of
               optionholders,  if  appropriate  and  agreed  to by the  parties,
               options therefor,  equal to one hundred (100%) percent of the sum
               of (i) the  number of  issued  and  outstanding  shares of Common
               Stock as of the date of the Merger Agreement and (ii) any and all
               outstanding   options  to   purchase   shares  of  Common   Stock
               (collectively,  the "Merger  Shares"),  it being the intention of
               the parties to exclude from the  calculation of the Merger Shares
               any and all  outstanding  warrants to  purchase  shares of Common
               Stock.  The  Merger  Shares  would be issued in  accordance  with
               Regulation S pursuant to the  Securities  Act of 1933, as amended
               (the "Act") or other  exemption  under the Act as  determined  by
               MicroFrame   and  its  counsel.   The  Merger   Shares  would  be
               "restricted  securities"  within the meaning of the Act and could
               only be  resold in  accordance  with an  exemption  under the Act
               satisfactory  to  counsel  for  MicroFrame  or upon an  effective
               registration statement with respect to the Merger Shares.

         3.    Representations  and  Warranties.  MicroFrame,  SolCom  and Peter
               Wilson,  Peter McLaren and Hugh Evans, as principal  shareholders
               of the Parent (collectively,  the "Shareholders"),  together with
               any other shareholders of the Parent to be agreed to by

                                                                                

<PAGE>



               the  parties,  will  be  expected  to  make  representations  and
               warranties upon terms mutually agreed to by the relevant  parties
               and subject to disclosure schedules in the Merger Agreement.  The
               Merger Agreement will contain certain limitations of liability to
               be agreed to by the parties with  respect to the  representations
               and warranties and the indemnities referred to below.

         4.    Indemnification.  MicroFrame,  SolCom and the Shareholders  would
               also  agree  to  indemnify  each  other in the  Merger  Agreement
               against various potential liabilities, upon terms mutually agreed
               to by the relevant parties and subject to disclosure schedules in
               the Merger Agreement.

         5.    Conditions to Proposed  Transaction.  The Merger  Agreement would
               contain such representations, warranties, indemnities, conditions
               and agreements  appropriate to transactions of this nature as may
               be agreed  to by the  relevant  parties  and in  addition,  would
               specifically provide that the closing of the Transaction would be
               subject to the following  terms and conditions in a manner,  form
               and  substance   acceptable  to  MicroFrame,   SolCom  and  their
               respective attorneys:

                  a.  completion of due diligence  satisfactory  to the parties,
                      which  due  diligence  would  be  completed  prior  to the
                      execution and delivery of the Merger Agreement;

                  b.  receipt  of  all  necessary   consents  and  approvals  of
                      governmental bodies, lenders, lessors, vendors, landlords,
                      and other contractual and third parties;

                  c.  absence of any  material  adverse  change in  SolCom's  or
                      MicroFrame's   business,   financial  condition,   assets,
                      prospects or  operations  from the execution of the Merger
                      Agreement   until   such  time  as  the   Transaction   is
                      consummated;

                  d.  absence of material pending or threatened  litigation with
                      respect to SolCom or MicroFrame;

                  e.  delivery  of a legal  opinion,  closing  certificates  and
                      other appropriate  documentation  requested by MicroFrame,
                      SolCom  and  their  respective  counsel  as  agreed by the
                      parties;

                  f.  delivery by SolCom of (i) audited financial  statements of
                      SolCom  through  March 31, 1998 and (ii)  unaudited  "stub
                      period"  financial   statements  for  subsequent   periods
                      satisfactory  to  MicroFrame  and its  accountants,  which
                      financial   statements  shall  be  prepared  in  a  format
                      consistent with accounting policies in effect with respect
                      to  those  audited  financial  statements,  together  with
                      short-term  projections  for the period from April 1, 1998
                      through March 31, 1999 prepared in a quarterly format; and
                      delivery by MicroFrame of audited financial  statements of
                      MicroFrame for the year ended March 31, 1998 and unaudited
                      "stub period" financial statements for subsequent periods,
                      which financial statements shall be prepared in accordance
                      with   United   States   Generally   Accepted   Accounting
                      Principles;                                              

<PAGE>
                  g.  approval  of  the  Transaction  by  the   shareholders  of
                      MicroFrame and SolCom;

                  h.  clearance by the Securities and Exchange  Commission  (the
                      "Commission")  of an  Information  Statement  pursuant  to
                      Regulation 14C under the Securities  Exchange Act of 1934,
                      as amended;

                  i.  delivery  of a  fairness  opinion in  connection  with the
                      Transaction  satisfactory  to the boards of  directors  of
                      MicroFrame  and SolCom,  which  opinion would be delivered
                      prior  to  the   execution  and  delivery  of  the  Merger
                      Agreement;

                  j.  election to the  MicroFrame  Board of Directors of two (2)
                      nominees selected by SolCom; and

                  k.  piggyback  registration  rights with respect to the Merger
                      Shares and an  undertaking  by  MicroFrame to use its best
                      efforts to register the Merger Shares with the  Commission
                      within 12 months of the consummation of the Transaction.

         6.    Binding Provisions. Upon execution by SolCom and the Shareholders
               of this Letter of Intent,  the matters  described  in each of the
               following  subsections  of  this  Section  6  (collectively,  the
               "Binding Provisions") shall constitute the valid, legally binding
               and  enforceable  agreements  of  the  respective  parties  bound
               therein  and shall  continue  indefinitely  from the date  hereof
               except as otherwise explicitly set forth herein.

                  a.  Exclusivity.   SolCom,  the  Shareholders  and  MicroFrame
                      acknowledge  that each such party will devote  substantial
                      time and  resources  and  incur  substantial  expenses  in
                      connection with the investigation and documentation of the
                      Transaction. To induce each such party to devote such time
                      and  resources  and to incur such  expenses,  the  parties
                      agree  that  prior to the  earlier  of (I) the date of the
                      execution  and  delivery  by the  parties  of  the  Merger
                      Agreement  or (II)  forty-  five  (45)  days from the date
                      hereof,  they will not (without the prior written  consent
                      of the other party) directly or indirectly,  nor will they
                      knowingly permit any officer, director, employee, agent or
                      advisor of MicroFrame  or SolCom,  as the case may be, to:
                      (i) solicit,  initiate, accept, encourage or engage in any
                      discussions  with  respect to proposals or offers from any
                      corporation,  partnership, limited liability entity, trust
                      or any other  person  or  entity,  or any  group  thereof,
                      relating  to (A) any  acquisition,  purchase  or option to
                      purchase  any of the shares of capital  stock of SolCom or
                      MicroFrame  or any of the  assets  (other  than  sales  of
                      inventory in the ordinary  course of business)  of, or any
                      other equity interest in, SolCom or MicroFrame, or (B) any
                      merger,   consolidation   or   other   form  of   business
                      combination  or joint  venture with SolCom or  MicroFrame;
                      (ii) continue (and cause any officer, director,  employee,
                      agent or advisor of SolCom or MicroFrame  to  discontinue)
                      any of the  foregoing in the event that such has commenced
                      prior to the execution of this Letter of Intent;  or (iii)
                      furnish to any such person or entity any information  with
                      respect to any of the foregoing. If any party receives any
                      such  proposals  or offers,  such party  shall  notify the
                      other  party in  writing  of such  proposals  or offers as
                      promptly as reasonably practicable.

                                                                                

<PAGE>

                  b.  Standstill.   In  the  event  that  the   Transaction   is
                      consummated, for a period of one (1) year from the date of
                      such consummation,  the Shareholders shall not acquire any
                      shares  of Common  Stock  except  in  accordance  with the
                      Merger Agreement.

                  c.  Access.  For the period  through and including the earlier
                      of (I)  the  date of the  execution  and  delivery  by the
                      parties of the Merger  Agreement or (II)  forty-five  (45)
                      days from the date hereof,  each of SolCom and  MicroFrame
                      shall  hereafter  provide to each other complete access to
                      its facilities, books and records, in each instance during
                      normal  business  hours and upon  reasonable  notice,  and
                      shall   cause   its   directors,    officers,   employees,
                      accountants,     attorneys,     agents,    advisors    and
                      representatives   (collectively,   "Representatives")   to
                      cooperate fully with SolCom or MicroFrame, as the case may
                      be, and their  respective  Representatives  in  connection
                      with the Transaction, the review and investigation of each
                      party, and the assets, contracts, liabilities, operations,
                      records  and other  aspects of the  business of SolCom and
                      MicroFrame.

                  d.  Confidentiality.  The parties hereby acknowledge and agree
                      that  MicroFrame  and  the  Subsidiary  are  parties  to a
                      certain  Mutual  Non-Disclosure   Agreement  dated  as  of
                      January 30,  1998 (the  "Non-Disclosure  Agreement").  The
                      parties  hereto  hereby  agree  that  the   Non-Disclosure
                      Agreement shall (i)  additionally  apply in each and every
                      respect  to the Parent  and the  Shareholders  and (ii) be
                      supplemented  such that neither SolCom,  the  Shareholders
                      nor MicroFrame  shall,  for a period of two (2) years from
                      the date hereof, solicit directly or indirectly,  or cause
                      any third  party to  solicit  directly  or  indirectly  on
                      behalf of any party,  as the case may be, any  employee of
                      any other party or its affiliates  (while such persons are
                      so  employed by such other  party or its  affiliates)  for
                      employment or other services.

                  e.  Conduct of Business.  For the period through and including
                      the earlier of (I) the date of the  execution and delivery
                      by the parties of the Merger  Agreement or (II) forty-five
                      (45) days  from the date  hereof,  (i) each of SolCom  and
                      MicroFrame  shall  hereafter  (A) conduct its business and
                      operations only in the ordinary course,  (B) not engage in
                      any  material  transaction  outside  the  ordinary  course
                      without the other party's prior written  consent,  and (C)
                      use its reasonable  commercial  efforts to preserve intact
                      its business organization,  keep available the services of
                      its  employees,  and maintain  satisfactory  relationships
                      with   suppliers,   contractors,    customers,   potential
                      customers and others having  business  relationships  with
                      such  party;  and (ii)  except as  otherwise  required  by
                      applicable  law or  contract  (as  determined  in the sole
                      discretion of counsel to MicroFrame), MicroFrame shall not
                      issue any new equity securities or securities  convertible
                      into equity securities.

                  f.  Disclosure. Except as and to the extent required by law or
                      by the rules and  regulations  of NASDAQ (as determined in
                      the sole discretion of counsel to MicroFrame), without the
                      prior written  consent of each of  MicroFrame  and SolCom,
                      neither SolCom or the  Shareholders,  on the one hand, nor
                      MicroFrame,

                                                                                

<PAGE>



                      on the other  hand,  shall,  and each  shall  direct  each
                      Representative   of  such  party  not  to,   directly   or
                      indirectly   make  any  public   comment,   statement   or
                      communication  with respect to, or  otherwise  disclose or
                      permit  the   disclosure   or  existence  of   discussions
                      regarding, a possible transaction among them or any of the
                      terms,  conditions  or other  aspects  of the  Transaction
                      proposed in this Letter of Intent.

                  g.  Costs. SolCom and MicroFrame shall each be responsible for
                      and bear its  respective  costs and  expenses  (including,
                      without  limitation,  any fees of attorneys,  accountants,
                      brokers  or  finders)  incurred  in  connection  with this
                      Letter  of Intent or the  proposed  Transaction,  provided
                      that, in the event that during the time period  subsequent
                      to the execution of this Letter of Intent and prior to the
                      execution  and  delivery of the Merger  Agreement,  either
                      SolCom  or  the   Shareholders,   on  the  one  hand,   or
                      MicroFrame,  on the other hand,  breaches any provision of
                      this Section 6 to any material extent and such breach,  if
                      capable of remedy,  is not remedied to the satisfaction of
                      the other parties within a period of fourteen (14) days of
                      notice such  breach  having  been  delivered  to the other
                      relevant  parties,  the other  party  shall be entitled to
                      terminate  this  Letter of Intent and shall be entitled to
                      liquidated damages in an amount equal to the lesser of (i)
                      such  party's  actual  legal,  accounting  and other costs
                      reasonably  incurred in connection with the Transaction or
                      (ii)   $150,000.   Each  of  the  parties   hereto  hereby
                      represents  and  warrants  to the  other  parties  that no
                      broker's or finder's fees have been or will be incurred by
                      any of them in  connection  with this  Letter of Intent or
                      the   proposed   Transaction.   SolCom  shall  only  incur
                      liability  hereunder  if and to the extent that SolCom may
                      lawfully  incur  such  liability  in  accordance  with the
                      applicable laws of Scotland.

                  h.  Governing  Law;  Venue.  This  Letter of  Intent  shall be
                      governed by and construed in  accordance  with the laws of
                      the State of New York without giving effect to conflict or
                      choice  of law  principles  thereof.  The  parties  hereto
                      hereby  consent  to  the  jurisdiction  and  venue  of the
                      federal and state courts  located in New York County,  New
                      York, in any action or proceeding  relating to the subject
                      matter of this Letter of Intent.

                  i.  Entire  Agreement;  Assignment.  This  Letter  of  Intent,
                      together with the Non-  Disclosure  Agreement,  as amended
                      herein,  constitutes  the  entire  agreement  between  the
                      parties,   superseding   all   prior   oral  and   written
                      agreements, understandings, representations and warranties
                      and courses of conduct  dealing  between the parties  with
                      respect to the subject matter hereof.  Except as otherwise
                      provided  herein,  this Letter of Intent may be amended or
                      modified  only  by a  writing  executed  by  each  of  the
                      parties.  No party may assign this Letter of Intent or any
                      of its respective rights or obligations  hereunder without
                      the prior written consent of the other parties.

                  j.  Survival. This Letter of Intent shall be superseded in all
                      respects  upon the  execution  and  delivery of the Merger
                      Agreement, provided that, in the event that

                                                                                

<PAGE>



                      this Letter of Intent is terminated prior to the execution
                      and delivery of the Merger Agreement,  Sections 6(a), (d),
                      (g) and (h) shall survive such  termination  in accordance
                      with   their   respective   terms   notwithstanding   such
                      termination.

         Kindly  indicate  your  approval and  agreement  with the  foregoing by
executing this Letter of Intent in the space provided below and returning a copy
thereof to the undersigned.

                                                     Very truly yours,

                                                     MICROFRAME, INC.



                                                     By: -----------------------
                                                      Stephen B. Gray, President

AGREED AND ACCEPTED:

SOLCOM SYSTEMS LIMITED



By:______________________________
      Name:
      Title:

SOLCOM SYSTEMS, INC.


By:______________________________
      Name:
      Title:

SHAREHOLDERS:


--------------------------------
Peter Wilson


--------------------------------
Peter McLaren


--------------------------------
Hugh Evans