PAIGNTON, England, September 15 /PRNewswire/ --

- Spirent GSS8000, Industry's Most Powerful and Flexible Simulation System Featured at ION GNSS 2008

Spirent Communications plc (LSE: SPT) the leading provider of navigation and positioning test solutions, today announces the first public demonstration of GPS/Galileo/GLONASS simulation system with Spirent GSS8000 ( multi-constellation, multi-signal simulator at Institute of Navigation (ION) GNSS 2008 conference. Spirent's new GSS8000 GNSS simulator is a powerful, flexible platform providing solutions for R&D and system and application testing. The GSS8000 supports multi-system, multi constellation GNSS testing with industry leading flexibility, accuracy, and reliability.

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Simulators are essential tools for GNSS R&D and system and application developers as they provide controlled, repeatable test signals. The GSS8000 on display from September 17 - 19 at ION GNSS 2008 conference in Savannah, Georgia includes GPS, Galileo and GLONASS signals, plus SBAS (WAAS, EGNOS, MSAS), combined at one RF output. The same system is also capable of generating signals representing the planned Japanese Quazi Zenith satellite system. Spirent will have GPS, GLONASS and Galileo receivers on their booth and intend to run a series of demonstrations throughout the show.

Representatives from Spirent Communications and Spirent Federal Systems will be at the ION GNSS 2008 show where the Spirent GSS8000 GNSS simulator will be a key focus of Spirent's exhibit. Spirent Federal Systems is the Spirent affiliate responsible for sales of Spirent equipment in the Americas.

Please visit Spirent at booth D at ION GNSS 2008, September 17-19 for a demo or to speak with one of our representatives.

About Spirent's Positioning Technology Division

Spirent is the world's leading provider of GNSS test and simulation systems. In this capacity, Spirent is the first choice of major manufacturers, integrators, test facilities and space agencies worldwide for GNSS testing and simulation solutions. Today, Spirent simulation systems are used throughout the world through a broad range of clients in more than 30 countries across five continents and in over 50 governmental agencies. Spirent delivers navigation and positioning testing equipment and services to all sectors of the navigation and positioning community, from government agencies through to emerging commercial markets (

About Spirent Communications plc

Spirent Communications ( is a global provider of integrated performance analysis and service assurance systems that enable the development and deployment of next-generation networking technology such as Internet telephony, broadband services, 3G wireless, global navigation satellite systems, and network security equipment. Spirent Communications' solutions are used by more than 1,700 customers in 30 countries, including the world's largest equipment manufacturers, service providers, enterprises and governments. Based in Sunnyvale, CA, Spirent Communications has 1,500 employees worldwide.

Spirent Communications plc Ordinary shares are traded on the London Stock Exchange (ticker: SPT). The Company operates a Level 1 American Depositary Receipt ("ADR") programme with each ADR representing four Spirent Communications plc Ordinary shares. The ADRs trade in the US over-the-counter ("OTC") market under the symbol SPMYY and the CUSIP number is 84856M209. Spirent Communications' sales to the United States government are made through Spirent Federal Systems Inc.

Spirent, Spirent Communications and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved.

CONTACT: John Pottle Divisional Marketing Director of Spirent Communications +44-1803-546-371

This document may contain forward-looking statements which are made in good faith and are based on current expectations or beliefs, as well as assumptions about future events. You can sometimes, but not always, identify these statements by the use of a date in the future or such words as "will", "anticipate", "estimate", "expect", "project", "intend", "plan", "should", "may", "assume" and other similar words. By their nature, forward-looking statements are inherently predictive and speculative and involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future. You should not place undue reliance on these forward-looking statements, which are not a guarantee of future performance and are subject to factors that could cause our actual results to differ materially from those expressed or implied by these statements. The Company undertakes no obligation to update any forward-looking statements contained in this document, whether as a result of new information, future events or otherwise.

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John Pottle, Divisional Marketing Director of Spirent Communications, +44-1803-546-371, LOGO:, PHOTO: