Exhibit 99.1

CONTACT INFORMATION:                                      FOR IMMEDIATE RELEASE
Financial: Bruce Crowell,
Chief Financial Officer
732-945-6000
bcrowell@dset.com
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Media Relations:
Patricia Beninati
Director of Marketing,
732-945-6000 Ext. 240
pbeninati@dset.com
- ------------------
or
Lorretta Gasper
Wind Rose Communications
404-459-8878
lorretta.gasper@windrosecommunications.com




                  DSET Plans To Appeal NASDAQ Delisting Notice

SHREWSBURY, N.J.--Sept. 12, 2002--DSET Corporation (NASDAQ-SCM:DSET), one of the
industry's  premier  providers of electronic  bonding gateways and OSS solutions
for global, multi-vendor networks, announced today it received a letter from the
Nasdaq  Stock  Market,  Inc.,  informing  the Company  that its Common  Stock is
subject to delisting from the Nasdaq SmallCap Market because the Company had not
regained  compliance with the $1.00 minimum bid price per share  requirement set
forth in Marketplace Rule 4310(c)(8)(D).

DSET transferred the listing of its Common Stock from the Nasdaq National Market
to the Nasdaq  SmallCap  Market on May 29,  2002.  However,  the  Company is not
eligible for a 180 calendar day grace period to regain such compliance  since it
does not meet the $5.0  million  stockholders'  equity  requirement  for initial
inclusion  on the  NASDAQ  SmallCap  Market  set forth  under  Marketplace  Rule
4310(c)(2)(A).

DSET has requested a hearing before the NASDAQ Listing  Qualifications  Panel to
appeal the  ruling by NASDAQ.  During the  appeals  process,  which the  Company
expects  will take  between  30 and 60 days,  the  Company's  Common  Stock will
continue to trade on the NASDAQ SmallCap Market.  There can be no assurance that
the Listing  Qualifications Panel will grant the Company's request for continued
listing. In the event the Listing  Qualifications Panel does not grant continued
listing,   the   Company   expects   its  Common   Stock   would  trade  on  the
Over-the-Counter  Bulletin  Board  (OTCBB).  The OTCBB is a regulated  quotation
service  that  displays   real-time  quotes,   last-sales   prices,  and  volume
information for more than 3,600 equity securities.




About DSET

DSET Corporation  (www.dset.com)  is one of the leading  providers of innovative
OSS software solutions  designed to minimize  operational costs and maximize the
value of service  offerings for  telecommunications  providers around the world.
Since 1989, DSET's field-proven products have been used to build critical global
network  applications  that  generate  immediate  return on  investment.  DSET's
portfolio of industry-leading products include: electronic-bonding gateways that
allow competitive service providers to exchange information  electronically with
other telecommunications  providers which significantly reduce the time required
to  provision  services and resolve  service  outages for their  customers;  and
IPSource,  an advanced IP provisioning,  activation and  configuration  platform
enabling providers to deploy,  modify and manage services quickly,  reliably and
profitably.

Statements about financial matters in this press release,  other than historical
facts, are forward-looking.  Since all statements about DSET's plans, estimates,
and  expectations  are  based on  current  projections  that  involve  risks and
uncertainties,  and are  subject  to change at any time,  the  company's  actual
results may differ materially from expected  results.  Investors should consider
these risks and  uncertainties,  which are discussed in documents  filed by DSET
with the Securities and Exchange Commission.  These documents identify important
factors  that could  cause the actual  results to differ  materially  from those
contained in the  projections  or  forward-looking  statements.  DSET  expressly
disclaims any obligation to update any forward-looking statements.



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