Symmetricom and Alliance for Telecommunications Industry Solutions (ATIS) Present IPTV Webinar Series.

First Free ATIS TechThink Webinar Focuses on Interoperable IPTV Architecture for Next Generation IPTV - Tuesday, May 8, 2007

SAN JOSE, Calif. -- Symmetricom, Inc. (NASDAQ: SYMM), a worldwide leader in precise time and frequency technologies that accelerate the deployment and enable the management of next generation networks, today announced the company will be presenting a free TechThink Webinar entitled "An IPTV Reference Architecture: The First Step in Moving Toward New Services" along with the Alliance for Telecommunications Industry Solutions (ATIS) on Tuesday, May 8, 2007, 1:00 p.m. EDT/10:00 a.m. PDT. The ATIS TechThink Webinar is the first in a series of three ATIS Webinars focusing on IPTV and will examine the carrier requirements for the interoperable IPTV architecture that will carry the next generation of IPTV video and entertainment services.

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This ATIS Webinar examines the carrier requirements for the interoperable IPTV architecture that will carry the next generation of IPTV video and entertainment services. It will provide high-level insight from a panel featuring representatives from Verizon, Symmetricom, Alcatel-Lucent and the ATIS IPTV Interoperability Forum (IIF).

The TechThink Webinar presentation will include:

* Service providers' requirements for an interoperable IPTV architecture

* The industry roadmap for IPTV services as shared in the IPTV High Level Architecture document recently released by the ATIS IIF

* The impact of alternative architecture decisions from the end users perspective including the importance of considering Quality of Experience (QoE) as an extension of Quality of Service (QoS) measurements

John Bernhards has responsibility for membership development, marketing and public relations activities that bring support to the technical planning and standards development activities of the ATIS. Over 300 of the communications industry's leading service providers, equipment manufacturers, software companies and other industry stakeholders participate in ATIS standards committees and related activities for the purpose of prioritizing and defining the industry's technical and business requirements and creating market-driven standards.

Mike Nawroki is currently responsible for the overall management of Verizon's Standards and Industry Forum program and also provides regulatory support for Verizon's technology initiatives. He has been with Verizon, Bell Atlantic and AT&T Western Electric for over 29 years in various technical capacities. He holds a Bachelor of Science in Electrical Engineering from Johns Hopkins University and a Master of Electrical Engineering from George Washington University.

Randy Sharpe is senior principal engineer in Alcatel-Lucent's Access Network CTO group specializing in IPTV. Before joining Alcatel in 2001, he had more than 20 years of experience in the development and application of video compression, data transmission and optical and DSL access systems. He was a founder and the principal architect at BroadBand Technologies. Randy has participated in several other industry forums including ITU-T, NRIC, DSL Forum, FSAN and DAVIC. He holds a Bachelor of Science in Electrical Engineering from the University of Michigan and a Master of Electrical Engineering from MIT.

Yves Cognet is currently chief technology officer for the QoE Assurance Division at Symmetricom. In 1999, he co-founded QoSmetrics, acquired by Symmetricom in January 2007. Symmetricom's V-Factor[TM] technology is based on the Motion Picture Quality Metrics (MPQM) model adapted specifically for end-to-end video quality scoring and is the first and only video quality metric that takes into account both network and content impairments. Prior to QoSmetrics, he was founder of Experdata and founder of Quallaby before that. Mr. Cognet is a leading expert in IP networks and testing, spending more than 25 years in the fields of testing and networking with major companies such as Philips Telecom, CS Telecom and Netcom System. He holds a Master of Mathematics from University of Grenoble, France and a Master of Computer Science from Eustitut Polytchnique de Grenoble.

Past Webinars with ATIS include "Evolution in Timing and Synchronization Technologies" in January 2007 and "Ensuring QoS Through Timing in Next Generation Networks" in December 2006. The archives are available at: http://ngn.symmetricom.com/resource_center/webcasts.asp.

About ATIS

ATIS is a technical planning and standards development organization that is committed to rapidly developing and promoting technical and operations standards for the communications and related information technologies industry worldwide using a pragmatic, flexible and open approach. Participants from more than 350 communications companies are active in ATIS' 23 industry committees and Incubator Solutions Program. For more information, visit www.atis.org.

About Symmetricom, Inc.

As a worldwide leader in precise time and frequency products and services, Symmetricom provides "Perfect Timing" to customers around the world. Since 1985, the company's solutions have helped define the world's time and frequency standards, delivering precision, reliability and efficiency to wireline and wireless networks, instrumentation and testing applications and network time management. Deployed in more than 90 countries, the company's synchronization solutions include primary reference sources, building integrated timing supplies (BITS), GPS timing receivers, time and frequency distribution systems, network time servers and ruggedized oscillators. Symmetricom also incorporates technologies including Universal Timing Interface (UTI), Network Time Protocol (NTP), Precision Time Protocol (IEEE 1588), and others supporting the world's migration to Next Generation Networks (NGN). Symmetricom is based in San Jose, Calif., with offices worldwide. For more information, visit www.symmetricom.com.