Exhibit 99.1


[GRAPHIC OMITTED]                                              [GRAPHIC OMITTED]


CONTACT:
The Management Network Group, Inc.     or      Brainerd Communicators (for TMNG)
Janet Hall                                     Olga Shmuklyer (Media)
Janet.Hall@tmng.com                            shmuklyer@braincomm.com
800.876.5329 x340                              Corey Kinger (Investors)
                                               kinger@braincomm.com
                                               212.986.6667

S3 Matching Technologies
Jim Moore
JMoore@S3.com
512.300.9232


          TMNG AND S3 MATCHING TECHNOLOGIES TEAM TO MIGRATE ENTERPRISES
                         TO INTERNET PROTOCOL NETWORKS


             Offering Will Reduce Costs and Ease Transformation from
                          Circuit Switched Environment


Overland Park, KS and Austin,  TX - December 19, 2005 - The  Management  Network
Group, Inc. (Nasdaq: TMNG), a leading provider of management consulting services
to the global communications industry, and S3 Matching Technologies,  a software
company that  invented  TeraMatch(R),  an automated  reconciliation  program for
telecom inventory databases,  today announced a partnership to create a complete
offering to ease the  migration of companies  from circuit  switched to Internet
protocol (IP) networks. The move to IP networks is not optional for enterprises;
it is an essential component of long term communications strategies.

TMNG will bundle S3's  enterprise  business  systems for  inventory  management,
order  management,   invoice  forecasting,   and  traffic  management  into  its
proprietary  solutions.  The combination of these leading software products from
TMNG and S3 will  facilitate  critical  data



management  optimization  and cost  control for  enterprises  as they move to IP
networks.  Under  the  terms  of the  agreement,  TMNG  will  be  the  exclusive
third-party marketer and reseller of S3's software solutions to a defined client
base of service providers and partner outsourcers for use in  telecommunications
applications.  In addition,  TMNG will have a  non-exclusive  right to market S3
services to other service providers. Financial terms of the partnership were not
disclosed.

"The  transformation  from circuit  switched to Internet  protocol  networks is,
along  with  wireless  migration,  one of the  key  trends  driving  the  global
communications  industry,  and one that  enterprises  across every  industry are
grappling  with," said Rich  Nespola,  Chairman  and CEO of TMNG.  "S3  Matching
Technologies  has the premier  software  platform for optimizing data management
and  easing  the  migration.   By  combining  our   professional   services  and
implementation  expertise  with S3's  platform,  we've  developed an  end-to-end
solution for the IP  transformation  needs of our  clients.  Working with S3, we
will be looking to drive  significant  financial return for clients as they move
to IP architectures, providing them with a complete, augmented suite of services
- - from analysis through implementation."

"TMNG brings a strong  understanding  of S3's software and  capabilities  of our
proprietary  TeraMatch(R)  technology  and  how  S3  complements  their  unique,
hands-on work in managing  enterprise  transformation to IP environments,"  said
Jack Holt, CEO of S3. "This partnership creates a first of its kind offering for
enterprises faced with executing this massive transformation - a marriage of the
people-knowledge  with the industry's most innovative yet practical  technology.
Working with TMNG enables us to bring this expanded service offering to both new
and existing clients."


About TMNG
The  Management  Network Group,  Inc.  (Nasdaq:  TMNG) is a leading  provider of
strategy,  management,  marketing,  and operational  consulting  services to the
global communications  industry. With more than 400 consultants worldwide,  TMNG
serves communications  service providers,  technology  companies,  and financial
services firms. Since the company's inception in 1990, TMNG and its subsidiaries
- -- TMNG Strategy, TMNG Marketing, TMNG Operations and TMNG Europe -- have served
more  than   1,000   clients   worldwide,   including   all  the   Fortune   500
telecommunications  companies.  TMNG is headquartered in Overland Park,  Kansas,
with  offices  in  Boston,  Chicago,   London,  New  York,  San  Francisco,  and
Washington,  D.C.  TMNG can be  reached  at  1.888.480.TMNG  (8664) or online at
http://www.tmng.com.



About S3 Matching Technologies (www.S3.com)
S3 is an Austin,  Texas based company focused on providing  hosted and installed
automated  telecom  business  systems for the medium to large  enterprise.  S3's
patent-pending  TeraMatch(R)  technology  powers its proprietary  Telecom Supply
Chain Management  applications to establish and maintain accurate inventories of
all telecom services, delivering unprecedented cost control and optimization.

This  release  contains  forward-looking  statements  within the  meaning of the
Private  Securities  Litigation Reform Act of 1995.  Forward-looking  statements
involve risks and uncertainties.  In particular, any statements contained herein
regarding   expectations   with   respect  to  future   business,   revenues  or
profitability  are  subject  to known  and  unknown  risks,  uncertainties,  and
contingencies,  many of which are beyond the Company's control,  which may cause
actual results,  performance,  or  achievements to differ  materially from those
projected  or implied in such  forward-looking  statements.  Factors  that might
affect actual results, performance, or achievements include, among other things,
conditions in the  telecommunications  industry,  overall  economic and business
conditions,  the demand for the Company's goods and services,  and technological
advances and competitive  factors in the markets in which the Company  competes.
These  risks and  uncertainties  are  described  in detail  from time to time in
TMNG's filings with the Securities and Exchange Commission.



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