Symmetricom Announces Security Approved Ground-Based GPS Receiver Application Module (GB-GRAM) for Time and Frequency Receiver.

Integrated GB-GRAM Compliant SAASM GPS Receiver Approved by Global Positioning Systems Wing, Meeting Latest Security Requirements for Embedded Military Applications

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 its XLi SAASM Time and Frequency Receiver with a new Ground-Based GPS Receiver Application Module (GB-GRAM) SAASM receiver has been granted security approval by the Global Positioning Systems Wing (GPSW), meeting the latest security requirements of the Department of Defense (DOD). The GB-GRAM GPS Receiver is integrated into Symmetricom's XLi SAASM, an ultra precision time and frequency instrument.

"Symmetricom has been the premier provider of secure GPS based time and frequency solutions since launching the Mark V P(Y) Code Time and Frequency Receiver in 1996 and the XLi SAASM in 2005," commented Ron Holm, product marketing manager for Symmetricom. "Now, with this lightweight, third-generation GPS Precise Positioning Service (PPS) 12-channel receiver integrated into the XLi SAASM, we continue to meet the Government's requirements by delivering a security approved GB-GRAM compliant SAASM GPS instrument for the military."

The U.S. Government's GB-GRAM program fulfills a GPS Wing initiative to migrate to a defined, open system architecture for ground-based embedded military applications, incorporates the SAASM security device and is a low-power, secure and jam resistant standardized GPS solution used in communications and weapons platforms across the military. Formerly the Joint Program Office (JPO), GPSW has the overall responsibility for controlling the development, production, sale and distribution of GPS SAASM PPS Host Application Equipment (HAE).

The XLi SAASM's GB-GRAM GPS Receiver is a Small Serial Interface (SSI) form factor, lightweight, third-generation GPS PPS, 12-channel receiver supporting Direct Y and Black keys. Initially security approved by GPSW in 2005, the XLi SAASM is based on Symmetricom's XLi Time & Frequency System, the most precise, versatile and flexible solution for high performance timing and synchronization requirements. SAASM is the security architecture selected by the Joint Chiefs of Staff (JCS) to provide the next generation security functions for GPS authorized military users. Taking into account the JCS mandate that went into effect in October 1, 2006 requiring all newly fielded DoD GPS systems to use SAASM compliant PPS devices, unless waivered, the XLi SAASM provides the highest immunity to jamming plus multiple options that enable military users to tailor their systems to support nearly every possible output/input needed for time and frequency applications.

Availability

The XLi SAASM Time and Frequency Receiver with integrated GB-GRAM GPS Receiver will begin shipping in October 2007. For more information, visit: http://www.symmttm.com/PR/xli-saasm-gb-gram.asp.

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.