ADVISORY/Industry Leaders from NMS Communications to Share Insights Into Wireless and Voice Services Trends and Issues at Next Week's Fall 2002 VON.

Business Editors/High-Tech Writers

ADVISORY...for Tuesday (Oct. 8)

Fall Voice On The Net 2002

FRAMINGHAM, Mass.--(BUSINESS WIRE)--Sept. 30, 2002

Executives from NMS Communications (Nasdaq: NMSS), the leading supplier of technology for tomorrow's networks, will discuss emerging wireless and voice services trends and issues at the upcoming Fall 2002 VON (Voice on the Net) Conference and Expo. To be held October 7-10 at the Cobb Galleria Center in Atlanta, Georgia, VON is the IP communications industry-meeting place focused on the convergence of telecom and the Internet. In booth 119, NMS and NTT Comware will also demonstrate technology for an IP video and audio conferencing solution based on NMS' Convergence Generation(TM) (CG) 6500C communications platform and software building blocks.

NMS executives will present in the following conference sessions:

- "Implementing Wireless Internet"--Brough Turner, senior vice president, Chief Technology Officer and co-founder, Tuesday, October 8, 2:00-3:15 pm

- "3GPP Now!"--Allen Carney, vice president of marketing, Tuesday, October 8, 3:30-4:45 pm

- "State of the Industry: From Silicon to the Customer"--Brough Turner, Tuesday, October 8, 5:00-6:15 pm

- "3G Tutorial - Part I" --Brough Turner and Marc Orange, product manager of the Advanced Platform group, Wednesday, October 9, 9:00-10:15 am

- "3G Tutorial - Part 2"--Brough Turner and Marc Orange, Wednesday, October 9, 10:45 am- noon

- "Video over IP" --Wendell Bishop, chief scientist of Platform Solutions business and co-founder, Wednesday, October 9, 10:45 am-noon

- "Integrated Messaging: Ready for Prime Time?"--Brough Turner, Wednesday, October 9, 5:30-6:30 pm

Members of the media and market research communities interested in meeting with NMS executives at VON to discuss these and other next-generation communications topics are encouraged to contact Anne Nason at NMS ([e-mail]) at 508-271-1444 or Danna Fleishman at NMS ([e-mail]) at 508-271-1037.

About VON

The VON Conferences have become the most prominent gatherings focused on the convergence of the telecom and Internet industries. Produced by Key3Media, Fall 2002 VON will host more than 100 exhibitors and 300 presenters, including AT&T, Hewlett Packard, Cisco, Microsoft Corporation, and Texas Instruments. For more information visit: http://pulver.com/von.

About NMS Communications

NMS Communications (NASDAQ: NMSS) designs, delivers, and supports technology-leading systems and system building blocks for innovative voice, video, and data services on wireless and wireline networks. The world's top communications equipment suppliers, solution developers, carriers, and network operators trust NMS to help them bring applications and services to market faster and at lower costs.

Headquartered in Framingham, Massachusetts, with offices around the world and products deployed in over 90 countries, NMS has a record of technology innovations that have advanced the growth of the global communications industry. These achievements include voice quality enhancement software that pairs noise reduction and compensation to make it easy for both parties to hear in even the noisiest mobile phone conversations. They also include the industry's first complete and open IP gateway, packet media server, and multimodal system for enhanced services. Visit www.nmscommunications.com for more information.

Statements in this document expressing the beliefs and expectations of management regarding future performance are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on management's expectations as of the date of this document and are subject to uncertainty and changes in circumstances. Actual results may differ materially from these expectations due to risks and uncertainties including, but not limited to, a continued slowdown in communications spending, the implementation of the Company's strategic repositioning and market acceptance of the Company's new solutions strategy, quarterly fluctuations in financial results, the Company's ability to exploit fully the value of its technology and its strategic partnerships and alliances, the availability of products from vendors and other risks. These and other risks are detailed from time to time in the Company's filings with the Securities and Exchange Commission, including the Company's annual report on Form 10-K for the year ended December 31, 2001. In addition, while management may elect to update forward-looking statements at some point in the future, management specifically disclaims any obligation to do so, even if its estimates change. Any reference to our website in this press release is not intended to incorporate the contents thereof into this press release or any other public announcement.

NMS Communications and Convergence Generation are trademarks of NMS Communications Corporation. Alliance Generation is a registered trademark of NMS Communications Corporation. All other product or corporate references may be trademarks or registered trademarks of their respective companies.