Cricket Communications Announces Agreement of Fun New Mobile Entertainment Service Powered by NMS Communications.

In-Demand Service Delivers Music That Subscribers Can Use to Create Their Mobile Personalities

ORLANDO, Fla. -- NMS Communications (NASDAQ: NMSS), a leading provider of applications and platforms for value-added services, today announced that Cricket Communications, Inc., a leading provider of unlimited wireless services, has partnered with NMS Communications to use NMS's MyCaller[TM] Ringback solution. Content management and billing will be provided by Wmode's ClearMode[R] offering.

With plans to launch later this year, Cricket's more than 2.2 million customers will be able to use songs or other sounds to replace the standard tone callers hear as they wait for their call to be answered with audio entertainment - including music, sounds or celebrity voices.

Ringback service is a popular way for mobile operators like Cricket Communications to increase their revenues and reduce customer churn. And because ringback tones are integrated into the network, operators have complete control of the revenue stream. According to Ovum, ringback tone revenues are expected to reach $2 billion globally by 2009.

"The partnership with Cricket demonstrates that pre-paid users, as well as post-paid, want the fun, personalized experience delivered by MyCaller, and we're thrilled to be working with such an innovator in mobile communications," said John Orlando, chief marketing officer for NMS. "NMS's MyCaller Ringback solution uniquely allows operators to easily provide subscribers with the fun and exciting music content that they want to help further define their mobile personalities and interact with the service to reinforce their communities. With Cricket's adoption of the MyCaller Ringback application, more than 25 operators are utilizing MyCaller. No other vendor has a global operator footprint as large as NMS, with the depth of experience that implies."

MyCaller Ringback includes premium features that engage the subscriber - and their callers - in a way that involves using the mobile phone as more than a simple communication device, but rather as a way to build and reinforce the subscriber's identity and communities. This in turn drives user adoption and operator ARPU. These features include:

* Radio Station Play - subscribers select a music channel (e.g., jazz, classical, hip-hop, pop) and songs of that genre are randomly played to callers

* Gift Song - subscribers purchase a song and send it to another subscriber as a present or for a special occasion

* Shuffle Play - selections from the subscriber's library of music are randomly played to callers

The true audio content of ringback clips is more exciting than simple electronic tones, and subscribers appreciate that they can choose songs that they like and also assign different songs to particular callers that those individuals will like. With MyCaller Ringback, subscribers can even gift songs to their callers. This in turn produces a viral effect and drives adoption for the MyCaller Ringback service. NMS has more ringback deployments than any other ringback provider and the company's expertise and experience ensures operators of a world-class solution.

About Cricket([R])

Cricket is a simple, affordable mobile phone service offering customers and local businesses flat-rate, unlimited service over a high-quality, all-digital wireless network. Designed for customers under-served by traditional communications companies, Cricket is the pioneer of unlimited minutes with no long-term commitments or credit checks required. Cricket offers customers access to a variety of the latest handsets and feature-rich mobile applications such as unlimited text, instant and picture messaging, popular games, ringtones and wallpapers. For more information on Cricket visit www.mycricket.com. Cricket is offered by Leap Wireless International, Inc., headquartered in San Diego, Calif. For more information on Leap, visit www.leapwireless.com.

About NMS Communications

NMS Communications (NASDAQ:NMSS) is a leading provider of applications, platforms and technologies that make possible the rapid creation and deployment of a broad range of value-added services, from voice mail to IVR to ringback and mobile TV. 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, uncertainty 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 the Company's contract manufacturer and product component 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, 2005. 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 MyCaller are trademarks of NMS Communications Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders.