EXHIBIT 10.6


                              EMPLOYMENT AGREEMENT


         This  EMPLOYMENT  AGREEMENT (the  "Agreement")  dated as of November 1,
1997, is entered into by and among SAVILLE SYSTEMS PLC (the "Company"), a public
limited  company  organized  under the laws of the  Republic  of Ireland and its
subsidiaries,   SAVILLE  SYSTEMS  CANADA,   LTD.  and  SAVILLE   SYSTEMS,   INC.
(collectively,  the "Companies"),  and Bruce A. Saville, a resident of Edmonton,
Alberta, Canada (the "Executive").

                                   WITNESSETH

         WHEREAS,  the  Companies  desire to employ the  Executive in accordance
with the terms and subject to the conditions provided herein;

         NOW,  THEREFORE,  in  consideration  of  the  foregoing  premises,  the
respective  covenants and agreements of the parties herein contained,  and other
good and valuable consideration,  the receipt and sufficiency of which is hereby
acknowledged, the parties hereto, intending to be legally bound, hereby agree as
follows:

1. Employment.  The Companies  shall each employ the  Executive,  and the  
Executive  hereby agrees to serve the Companies, on the terms and conditions 
set forth herein.

2. Term.
(a) The  Companies  shall  each  employ  the  Executive  for a  one-year  period
commencing as of the date hereof,  unless sooner  terminated as provided  herein
(the "Term").  (b) The expiration or  termination  of this  Agreement  shall not
relieve any party of any  obligations  that may have accrued  hereunder prior to
such expiration or  termination.  The provisions of Sections 5, 6, 7, 14, 16 and
17 shall  survive the  expiration or  termination  of this  Agreement  except as
otherwise specifically provided in such sections.

3. Position and Duties.  During the Term, the Executive  shall serve as Chairman
of the Board of Directors of the Company (the "Board")  until March 31, 1998 and
thereafter  shall serve in such  capacity as the Board shall  determine  for the
remainder of the Term. The Executive shall have such duties as may be prescribed
by the Board  from time to time.  The  Executive  shall use his best  efforts to
promote and  develop  the  business  of each  Company;  shall  devote all of his
working  time and  effort  exclusively  to the  businesses  and  affairs  of the
Companies;  shall act in good  faith in  performing  all duties  required  to be
rendered under this Agreement;  and shall conduct himself in a manner consistent
with the best interest of the  Companies.  The Executive  agrees to abide by the
rules,  regulations,  instructions,  personnel  practices  and  policies  of the
Companies and any changes  therein which may be adopted from time to time by the
Companies.  The Executive  acknowledges  receipt of copies of all such rules and
policies committed to writing as of the date of this Agreement.

4. Compensation.
(a) Base Salary.  The Executive shall receive,  in bi-monthly  installments,  an
annual base salary of One Hundred  Twenty  Thousand  United States Dollars (U.S.
$120,000)  commencing  on the  commencement  of the Term.  Such salary  shall be
subject  to  adjustment  thereafter  as  determined  by the  Board,  in its sole
discretion,  may from  time to time  determine  (the  "Base  Salary").  Any such
increases shall take into account corporate and individual performance,  general
business conditions,  and such other factors as the Board in its sole discretion
may determine to be relevant.  Any increase in Base Salary or other compensation
shall in no way limit or reduce any other obligation of the Companies hereunder.
The Base Salary will be  allocated  among the  Companies to reflect the relative
contributions  provided by the Executive to the Companies,  as determined by the
Board from time to time. (b) Vacation.  Executive  shall be entitled to the same
vacation  benefits as are generally  available to other senior executives of the
Companies,  but in no event to less than four (4) weeks per year.  The Executive
shall  also be  entitled  to all  paid  holidays  given to the  Canadian  senior
executive  officers of the  Companies,  as  determined  by the Board in its sole
discretion. (c) Participation in Benefit Plans. During the Term, Executive shall
be eligible to participate in all employee benefit plans and arrangements now in
effect or which may hereafter be  established  that are generally  applicable to
other Canadian  senior  executive  officers of the Companies,  including but not
limited to, all life, group insurance and medical care plans and all disability,
retirement and other employee  benefit plans of the Companies that are available
to Canadian  senior  executive  officers.  (d)  Expenses.  During the Term,  the
Executive shall be entitled to receive prompt  reimbursement  for all reasonable
travel,  entertainment and other expenses incurred by him in connection with, or
related  to,  the  performance  of  his  duties,  responsibilities  or  services
hereunder,  upon  presentation  by  the  Executive  of  documentation,   expense
statements,  vouchers and/or such other supporting  information as the Companies
may request,  provided  however that such  amounts  must be in  accordance  with
budgets approved by the Board. (e) Secretarial  Services,  Office Space.  During
the Term,  the  Companies  will  provide  secretarial  services and office space
commensurate  with the needs and  requirements  of the  position  and  duties of
Executive specified herein, as determined by the Board in its sole discretion.

5. Unauthorized Disclosure.
(a) Executive agrees that all Confidential  Information (as hereinafter defined)
is and shall be the  exclusive  property of the Companies to be used only in the
performance of his duties for the Companies.  Executive  shall not,  without the
written  consent  of the  Board or a person  authorized  thereby,  knowingly  or
negligently  disclose  to any  person,  other than as  required  by law or court
order, or other than to an authorized employee of the Companies,  or to a person
to  whom   disclosure  is  necessary  or  appropriate  in  connection  with  the
performance by the Executive of his duties as an executive of the Companies, any
Confidential  Information  obtained by him while in the employ of the Companies.
Executive shall be allowed to disclose Confidential  Information to his attorney
solely for the purpose of ascertaining  whether such information is confidential
within the intent of this  Agreement;  provided,  however,  that  Executive  (i)
discloses to his attorney the  provisions  of this Section 5 and (ii) agrees not
to  waive  the  attorney-client  privilege  with  respect  thereto.  (b) For the
purposes  hereof,  "Confidential  Information"  shall mean any  confidential  or
secret  information,  know-how  or  data  of the  Companies,  whether  or not in
writing,  including,  but  not  limited  to,  inventions,  products,  processes,
methods, techniques, formulas, compositions,  compounds, projects, developments,
plans,  research data, clinical data,  financial data,  personnel data, computer
programs  and  customer  and  supplier  lists,  and  Intellectual  Property  (as
hereinafter  defined)  of  the  Companies;  provided,  however,  that  the  term
"Confidential  Information" shall not include any information that (A) is now in
or  subsequently  enters the public  domain  through  means other than direct or
indirect  disclosure  by any  party  hereto  in  violation  of the terms of this
Agreement,  or (B) is lawfully  communicated to Executive by a third party, free
of any confidential obligation,  subsequent to the time of communication thereof
by,  through  or on  behalf  of  the  Companies,  or  (C)  is  required  by  any
governmental or regulatory authority having jurisdiction or by court order to be
disclosed, provided, however that the Executive provides prior written notice to
the Companies of such  disclosure and takes all reasonable and lawful actions to
avoid and/or minimize the extent of such  disclosure.  Executive agrees that his
obligation not to disclose or use such Confidential  Information extends to such
types of information,  know-how,  records, and tangible property of customers of
the Companies, or suppliers of the Companies or other third parties who may have
disclosed or  entrusted  the same to the  Companies  or to the  Executive in the
course of the Companies' business.

6. Intellectual  Property. In consideration for the Base Salary, the sufficiency
of which is hereby  acknowledged  and agreed,  the  Executive  and the Companies
hereby  covenant  and  agree  as  follows:  (a) All  Intellectual  Property  (as
hereinafter  defined)  developed by the  Executive in  connection  with services
rendered by the Executive for or on behalf of the Companies or its customers, or
from the use of premises or property owned,  leased,  licensed or contracted for
by any of the  Companies,  both  prior  to and  subsequent  to the  date of this
Agreement,  shall be the property of the Companies. The Executive hereby assigns
to the  Companies  any and all  rights,  title and  interests  he now has or may
hereafter acquire in and to such Intellectual  Property and all related patents,
patent applications, copyrights and copyright applications. The Executive hereby
agrees as to all such Intellectual  Property, to make prompt and full disclosure
of all such  Intellectual  Property and to assist the  Companies in every proper
way,  at the  Companies'  sole  cost and  expense,  both  during  and  after his
employment,  to  obtain  from  time to  time,  maintain  and  enforce,  patents,
copyrights,  trade  secrets and other  rights and  protections  relating to said
Intellectual  Property in and to all countries,  and, to that end, the Executive
shall   execute  all  documents   including,   without   limitation,   copyright
applications,  patent  applications,  declarations,  oaths,  formal assignments,
assignment of priority  rights and powers of attorney,  which the Companies deem
necessary  or  desirable  for use in applying for and  obtaining  such  patents,
copyrights, trade secrets and other rights and protections on and enforcing such
Intellectual Property, together with any assignments thereof to the Companies or
persons designated by it. The Executive shall not, prior to or subsequent to the
expiration or termination of this Agreement,  use such Intellectual  Property or
disclose to any other person, confidential aspects of such Intellectual Property
without the prior written consent of the Companies. (b) Executive hereby waives,
in favor of the Companies,  and the successors,  assigns, and licensees thereof,
all of the Executive's moral rights prescribed by the Copyright Act of Canada or
any other applicable law in respect of the Intellectual Property so developed by
the  Executive  in  connection  with  services   rendered  as  provided  in  the
immediately  preceding  paragraph  (a).  (c) For  purposes  of this  Section  6,
"Intellectual  Property" shall mean all  intellectual  and industrial  property,
whether now or later created, developed or produced,  including, but not limited
to, discoveries,  developments,  designs,  improvements,  inventions,  formulae,
processes,  techniques,  data,  computer  programs,  computer  related know how,
hardware and firmware,  patents,  copyrights,  trademarks and trade secrets, and
other rights and protections in connection therewith, and all documentation with
respect thereto,  whether  patentable or not, however recorded,  which documents
the design and details of any of the foregoing,  contains a description thereof,
or explains the utilization thereof.

7. Non-Competition.
(a) While the Executive is employed by the  Companies  hereunder or is receiving
any  compensation  pursuant  hereto,  and for one year  after  the  later of the
termination  of his  employment  with the  Companies or the  termination  of any
payments of compensation  hereunder (the  "Non-Compete  Period"),  the Executive
shall not compete with any business then conducted by the Companies  without the
prior written consent of the Board; except that, notwithstanding this Section 7,
the  Executive  may perform any duties on behalf of the  Companies  as the Board
shall direct.  For purposes of this  Agreement,  the term  "compete"  shall mean
engaging  in a  business  as a more than five (5%)  percent  direct or  indirect
stockholder,  an officer,  a  director,  an  employee,  a partner,  an agent,  a
consultant,  or in any other individual or  representative  capacity (unless the
Executive's  duties,  responsibilities,  and activities,  including  supervisory
activities, for or on behalf of such business are not related in any way to such
"competitive"  activity)  if it  involves:  (i)  engaging in the business of (A)
developing,  marketing, supporting,  maintaining,  licensing or selling billing,
record-keeping,    customer    support    and/or    interface    software    for
telecommunications or other utility-type  services in the  telecommunications or
other  utility-type   industries  generally,   anywhere  in  the  world  or  (B)
developing,  marketing and/or providing  service bureau services with respect to
the rating,  processing and billing of  telecommunications or other utility-type
services  anywhere in the world or (C) the  provisions  of software  development
services and expertise to the blood  industry in Canada (the  "Business");  (ii)
rendering services or advice pertaining to the Business to, or on behalf of, any
person,  firm, or corporation  which is in competition with the Companies or any
of its  subsidiaries  during  the  Non-Compete  Period;  (iii)  engaging  in, or
entering into services or advice  pertaining  to, any other line of business (A)
that the Companies  actively  conduct or which the Executive knows the Companies
are contemplating  conducting and (B) that competes with any of the Companies in
the same  geographic  area as such  line of  business  is then  conducted  or is
contemplated to be conducted; or (iv) employing or soliciting for employment any
employees  of the  Companies.  (b) In the event  that the  restrictions  against
engaging  in a  competitive  activity  contained  in this  Section  7  shall  be
determined by any court of competent  jurisdiction to be unenforceable by reason
of  their  extending  for too  great a  period  of  time  or  over  too  great a
geographical  area or by  reason  of their  being  too  extensive  in any  other
respect,  this  Section 7 shall be  interpreted  to extend only over the maximum
period of time for which it may be  enforceable,  over the maximum  geographical
areas as to which it may be  enforceable  and to the maximum extent in all other
respects as to which it may be  enforceable,  all as determined by such court in
such action.  (c) The Executive  acknowledges  that a breach of the restrictions
against  engaging in a  competitive  activity  contained  in this Section 7 will
cause  irreparable  damage to the  Companies,  the exact amount of which will be
difficult to ascertain, and that the remedies at law for any such breach will be
inadequate.  Accordingly,  the  Executive  and the  Companies  agree that if the
Executive breaches the restrictions  against engaging in a competitive  activity
contained in this Section 7, then the  Companies  shall be entitled to equitable
relief,  including,  but not limited to, injunctive relief, without posting bond
or other  security.  In addition to, and not in lieu of, such equitable  relief,
the  Companies  and the  Executive  agree  that if the  Executive  breaches  the
restrictions  against  engaging  in a  competitive  activity  contained  in this
Section 7, the Companies  shall have a right of setoff against any amounts owing
hereunder for the resulting damages.

8. Termination.
(a) The  Companies may terminate  their  employment of the Executive  under this
Agreement in the event of the Executive's death or retirement and in any case in
which the Board  determines  that the  Executive:  (i) has willfully  refused or
willfully  failed to perform his obligations  under this Agreement or the duties
properly assigned to him in accordance with the terms of this Agreement and such
refusal or failure is detrimental  to the interests of the  Companies,  provided
that, the employment of the Executive shall not be terminated under this Section
8(a)  unless  the  Executive  is given  notice  that  the  conduct  in  question
constitutes grounds for termination under this Section 8(a) and the Executive is
allowed  thirty  (30) days to  remedy  the  refusal  or  failure;  (ii) has been
convicted  of an  indictable  offense  (whether  or not in  connection  with the
performance  by the  Executive of his duties under this  Agreement)  which would
have a material  impact on the business of the Companies  (or any  subsidiary of
the  Companies);  (iii) has  through  willful  misconduct  or gross  negligence,
engaged  in an act or course  of  conduct  that  causes  material  injury to the
Companies  (or  subsidiary  of the  Companies);  (iv) is  willfully in breach of
Section 7 of this  Agreement;  (v) has during his employment  with the Companies
knowingly  engaged  in any act or course of  conduct  that  would  result in the
revocation,  or  jeopardize  the renewal of, any  licenses,  permits,  consents,
authorizations,  agreements or approvals  necessary for the Companies to conduct
their business or that would have a material adverse effect on the Companies; or
(vi) as a result of his physical or mental illness, has become unable to perform
his duties  hereunder  ("Disability")  for a period  amounting to eighteen  (18)
weeks in any six-month period;  provided,  however, that if, after recovery from
his Disability, the Executive is capable of performing his duties and desires to
resume  his  duties,  the  Executive  and  the  Companies  shall  execute  a new
Employment  Agreement,  substantially  in the  same  form as this  one,  for the
remaining  period of time for which  this  original  Agreement  would  have been
effective.  (b) Upon  termination  of this  Agreement,  the  Companies  shall be
relieved of all obligations under this Agreement. Termination under this Section
8 will not terminate the Executive's obligations under Sections 5, 6 or 7 except
to the extent provided therein.

9. Notice and Date of  Termination.  Any  termination by the Companies  shall be
communicated  by a written notice (the "Notice of  Termination").  The Notice of
Termination shall indicate the specific termination  provision in this Agreement
claimed to provide a basis for  termination of the Executive's  employment.  The
date of termination will be (a) if the Executive's  employment is terminated for
Disability,  thirty (30) days after Notice of Termination is duly given,  or (b)
if the  Executive's  employment is terminated for any other reason,  the date on
which a Notice of Termination is duly given (the "Date of Termination").

10. Compensation Upon Termination or During Disability.
(a) If the  Executive's  employment is terminated due to his death,  Executive's
estate  or  other  legal   representative  shall  be  entitled  to  receive  any
installment of the Base Salary and any accrued reimbursable  expenses due in the
month of death. In the event of the Executive's  death,  the rights and benefits
of the Executive under employee benefit and fringe benefit plans and programs of
the Companies will be determined in accordance  with the terms and provisions of
such plans and  programs.  (b) During any  period  that the  Executive  fails to
perform his duties hereunder due to Disability,  the Executive shall continue to
receive the Base Salary  during such period of  Disability.  If the  Executive's
employment is terminated due to  Disability,  the obligation of the Companies to
pay the Base Salary shall terminate. If the Executive's employment is terminated
due to  Disability,  the rights and  benefits of the  Executive  under  employee
benefit  and  fringe  benefit  plans  and  programs  of the  Companies  will  be
determined  in  accordance  with the  terms  and  provisions  of such  plans and
programs.  (c) If the  Executive's  employment  shall be terminated for a reason
other  than  Disability,  death  or  retirement,  the  Companies  shall  pay the
Executive his full Base Salary and any accrued reimbursable expenses through the
Date of  Termination;  provided,  that, all of such payments shall be subject to
the Companies'  right of setoff pursuant to Section 7(c) hereof.  Any rights and
benefits the Executive may have under employee  benefit and fringe benefit plans
and programs of the Companies will be determined in accordance with the terms of
such plans and programs.  (d) If the Executive's  employment  pursuant hereto is
terminated  due to  retirement  or as a result of the  expiration of the Term of
this  Agreement,  the  Executive  shall be  entitled  to receive the Base Salary
installments  up to  and  including  the  calendar  month  of  termination.  The
Companies  shall also permit the  Executive  to continue to  participate  in the
employee  benefit and fringe benefit plans and programs of the Companies  beyond
such  termination at the sole cost and expense of the  Executive,  to the extent
the Companies  reasonably  determines such  continuation is permitted by, and is
customary  with respect to, the employee  benefit and fringe  benefit  plans and
programs.

11.Representations and Warranties.
(a) The Executive  represents  and warrants to the Companies that he is under no
contractual  or  other   restriction  or  obligation  which  would  prevent  the
performance  of his  duties  hereunder,  or  interfere  with the  rights  of the
Companies  hereunder.  (b) Each of the Companies  represents and warrants to the
Executive that (i) it has all requisite power and authority to execute, deliver,
and perform this Agreement,  (ii) all necessary corporate proceedings of each of
the Companies  have been duly taken to authorize the  execution,  delivery,  and
performance  of  this  Agreement,   and  (iii)  this  Agreement  has  been  duly
authorized,  executed,  and delivered by the Companies,  is the legal, valid and
binding obligation of the Companies, and is enforceable against the Companies in
accordance with its terms.

12. Successors; Binding Agreement. As used in this Agreement,  "Companies" shall
mean the Companies as  hereinbefore  defined and any successor to  substantially
all of the business  and/or assets of such Companies which executes and delivers
an  agreement  to  assume  and be bound by the terms  hereof or which  otherwise
becomes bound by all the terms and  provisions of this Agreement by operation of
law. For purposes of this Section 12,  "substantially all of the business and/or
assets of the  Companies"  shall  include  any  portion of the  business  of the
Companies  which  shall have  contributed  eighty  percent  (80%) or more of the
revenues of the  Companies  as a whole  during the last fiscal year prior to any
such sale, merger or consolidation, or which shall have comprised eighty percent
(80%) or more of the assets of the Companies as a whole immediately prior to any
such sale, merger or consolidation.

13.  Assignment.  The Executive may not assign this Agreement or any part hereof
without the prior written consent of each of the Companies, which consent may be
withheld by any of the Companies for any reason it deems appropriate.

14. Notice. For purposes of this Agreement, notices and all other communications
provided for in this  Agreement  shall be in writing and shall be deemed to have
been duly given (a) on the date of delivery when  delivered by hand,  (b) on the
date of transmission when sent by facsimile  transmission during normal business
hours with telephone  confirmation  of receipt,  (c) one day after dispatch when
sent by  overnight  courier  maintaining  records of receipt,  or (d) three days
after  dispatch  when sent by  registered or certified  mail,  postage  prepaid,
return receipt requested, all addressed as follows:
         If to the Companies:

                  Saville Systems, Inc.
                  One Van de Graaff Drive
                  Burlington, MA 01803

         If to the Executive:

                  Bruce A. Saville
                  4445 Calgary Trail
                  Suite 209
                  Edmonton, Alberta CANADA T6H 5R7
                  Telecopier:  (403) 430-2149

or to such other  address  as either  party may have  furnished  to the other in
writing in accordance  herewith,  except that notices of change of address shall
be effective only upon receipt.

1.  Miscellaneous.  No provision of this  Agreement  may be modified,  waived or
discharged unless such waiver, modification or discharge is agreed to in writing
signed by the  Executive  and such  officer or director  as may be  specifically
designated by the Board. No delay or omission by the Companies in exercising any
right under this Agreement shall operate as a waiver of that or any other right.
A  waiver  or  consent  given  by the  Companies  on any one  occasion  shall be
effective only in that instance and shall not be construed as a bar or waiver of
any right on any other occasion.  Except where the context  otherwise  requires,
wherever used the singular  shall  include the plural,  the plural the singular,
the use of any gender  shall be  applicable  to all genders and the word "or" is
used in the inclusive sense.  Headings  contained in this Agreement are inserted
for  reference  and  convenience  only and in no way  define,  limit,  extend or
describe the scope of this  Agreement or the meaning or  construction  of any of
the provisions  hereof. 

2. Governing Law;  Arbitration;  Jurisdiction.  
(a) This Agreement shall be governed by,and construed and enforced in accordance
with,the laws of the Province of Alberta,Canada without regard to the conflict 
of law  provisions  thereof.  (b) Any and all  disputes,controversies or claims
between  or  among  the  parties  hereto,  arising  under,  out of or in any way
relating to this Agreement  except with respect to the Companies'  right to seek
injunctive relief with respect to Sections 5, 6, and 7 as provided under Section
17 hereof,  shall be referred to arbitration and finally settled by arbitration.
Either  party may  elect to  commence  the  arbitration  but in any  event  such
election  will only be  effective  if made by written  notice to the other party
hereto. Subject to the provisions hereinafter set forth, the arbitration will be
conducted  and  determined  in  accordance  with the rules of the  International
Commercial  Arbitration Act, R.S.O. 1990, c.I.9. The procedure shall be modified
as follows:  (i) The arbitration  will be conducted with three (3)  arbitrators.
The Companies and Executive  each shall appoint one (1)  arbitrator  and the two
(2) arbitrators  thus appointed shall appoint the third  arbitrator.  If the two
(2) arbitrators fail to agree on the third arbitrator within thirty (30) days of
their  appointment,  the appointment  shall be made, upon request of a party, by
the  Alberta  Court of Justice  (General  Division);  (ii) The  decision  of the
arbitrators  shall be final and  binding  and  neither  party  shall  appeal the
decision on any basis to any court; (iii) Upon failure,  refusal or inability of
any arbitrator to act, his or her successor  shall be appointed in the manner as
provided above; and (iv) The arbitrators  shall render the decision and award in
writing with counterpart  copies to all parties.  The arbitrators  shall have no
right to modify the terms of this  Agreement  except to the extent  specifically
provided  hereunder.  The  costs  of the  arbitration,  including  the  fees and
expenses of counsel, expert and witness fees, and costs of the arbitrators shall
be in the  discretion of the  arbitrators,  who shall have the power to make any
award which is just in the circumstances.  (c) The arbitration  proceeding shall
take place in the City of  Edmonton,  Alberta,  Canada and shall be conducted in
the English  language.  The arbitrators  shall apply the laws of the Province of
Alberta,  Canada,  without  reference to the conflicts of laws thereof.  (d) Any
suit, action or proceeding instituted by either party hereto, including, but not
limited to, any  proceeding  to enforce an award of damages by the  arbitrators,
may be brought  in the  courts of the  Province  of  Alberta,  and except to the
extent as otherwise provided in this Section 16, said courts will have exclusive
jurisdiction  with  respect  to all  actions,  suits,  motions,  issues or other
matters whatsoever arising out of this Agreement.

3. Injunctive  Relief;  Cumulative Rights. The Companies and the Executive agree
that,  without  limitation  of the rights of the  Companies  with respect to any
other  breach of this  Agreement,  the harm to the  Companies  arising  from any
breach by the  Executive  of  Sections 5, 6, and 7 of this  Agreement  could not
adequately be compensated for by monetary damages, and accordingly the Companies
shall, in addition to any other remedies  available to them at law or in equity,
be entitled to obtain  preliminary and permanent  injunctive relief against such
breach. The Executive agrees that the various provisions of this Agreement shall
be construed  as  cumulative,  and no one of them is exclusive of the other,  or
exclusive of any rights allowed by law.

4. Validity.  The invalidity or  unenforceability of any provision or provisions
of this Agreement shall not affect the validity or  enforceability  of any other
provision of this Agreement, which shall remain in full force and effect.

5. Counterparts. This Agreement may be executed in several counterparts, each of
which  shall  be  deemed  to be an  original  but all of  which  together  shall
constitute one and the same instrument.

6. Withholding. Anything in this Agreement to the contrary notwithstanding,  all
payments  required to be made by the Companies  hereunder to the Executive shall
be subject to the withholding of such amounts relating to taxes as the Companies
may reasonably  determine they should withhold pursuant to any applicable law or
regulation.  In lieu of  withholding  such  amounts,  in whole  or in part,  the
Companies may, in their sole discretion,  accept other provisions for payment of
taxes and withholdings as required by law,  provided they are satisfied that all
requirements  of law  affecting  its  responsibilities  to  withhold  have  been
satisfied.

7. Expenses. Each party to this Agreement hereby indemnifies the other party for
such reasonable  attorneys' fees as are necessary and actually  incurred by such
party to enforce the terms of this Agreement.

8. Entire Agreement. This Agreement constitutes the entire agreement between the
parties  hereto  with  respect  to  the  subject  matter  hereof,   and  related
transactions  contemplated  hereby  and  supersedes  all prior  oral or  written
agreements,  commitments or understandings  with respect to the matters provided
for herein.

         IN WITNESS  WHEREOF,  the parties have executed  this  Agreement on the
date and year first above written.

                                           SAVILLE SYSTEMS PLC
                                           SAVILLE SYSTEMS, INC.
                                           SAVILLE SYSTEMS CANADA, LTD.


                                           By: /s/ John J. Boyle, III
                                           Name: John J. Boyle, III
                                           Title:  President