AT4 Wireless Selects Spirent(R) Communications ...

HERNDON, Virginia and SUNNYVALE, California, October 1 /PRNewswire/ --

    - Spirent SR5500 Test Solution Contributes to Successful Rollout of WiMAX
Services in North America



    WiMAX World 2008 Spirent Booth # 63 -- Spirent Communications plc
(LSE: SPT), a global provider of performance analysis and service management
solutions, today announced that it has been selected by AT4 wireless to
provide RF channel emulation capability to AT4 wireless' WiMAX
interoperability lab. The lab will use Spirent SR5500 Wireless Channel
Emulators to test the interoperability between commercial WiMAX
infrastructure and WiMAX mobile devices.



(Logo: http://www.newscom.com/cgi-bin/prnh/20080909/CLTU016LOGO )

    AT4 wireless' lab is providing device interoperability testing for the
most ambitious North American rollout of WiMAX services to date. "We know
that this deployment will become a highly visible symbol of WiMAX's
capabilities, so we've taken a very serious approach to evaluating all
available test solutions required for our test lab to meet our customer
demands and requirements," said Jose Aurelio Rodrigo, Chief Operating Officer
of AT4 wireless, Inc. "Spirent's test equipment provides all the features
necessary to evaluate complex interoperability scenarios including 4x4 MIMO
and mobility, as well as the flexibility and modularity to adapt as our
testing needs evolve."



    "With the Spirent SR5500 having been adopted by leading WiMAX network
operators, equipment manufacturers and technology providers, Spirent has
already made significant contributions to the deployment of WiMAX in North
America," said Rob Van Brunt, vice president and market segment leader at
Spirent Communications Wireless division. "We're delighted to have been
chosen by AT4 wireless for this phase of interoperability testing, so crucial
to moving the technology forward. With our combined expertise in WiMAX
technology we can provide an excellent test solution which will contribute to
a successful rollout."



    The Spirent SR5500 builds on more than a decade of wireless test
leadership, providing highly accurate emulation of the transmission channel
for receiver performance testing. Unlike technology-specific channel
emulators, the Spirent SR5500 supports multiple emerging next-generation
technologies. All relevant frequency bands are supported, including the new
700 MHz and 2.7 GHz bands. In addition to WiMAX, the advanced fading engine
ensures accurate testing of other sophisticated technologies including HSPA,
EV-DO and LTE.



    Spirent is demonstrating performance capabilities of Spirent SR5000 at
WIMAX World 2008 in Chicago, October 1 to October 2 at Booth # 632. For more
information please visit www.spirent.com/go/SR5500.



About AT4 wireless

    AT4 wireless, a global supplier of Testing Solutions for wireless
technologies prides itself on being both, the most complete Wireless
Certification & Testing Laboratory in the world and a leading manufacturer of
cutting-edge test & measurement equipment for telecommunication technologies.



AT4 wireless, Inc.

    AT4 wireless, Inc. is the first North America-based certification test
laboratory, accredited by the WiMAX Forum in 2008. The lab is located in
Herndon, Virginia, easy to access due to its vicinity to the
Washington-Dulles International Airport.



    AT4 wireless, Inc. conducts WiMAX Forum Certification Testing, including
Radio and Protocol Conformance testing, Mobile Interoperability testing and
Radiated Performance Testing (RPT). AT4 wireless is the first location
worldwide to offer RPT Testing for WiMAX devices.



    AT4 wireless was founded in 1991, has more than 350 employees and
operates from its headquarter in Malaga/Spain and its U.S.-based branch in
Herndon, VA.



For more information, visit www.at4wireless.com

All trademarks are the properties of their respective owners.

About Spirent Communications plc

    Spirent Communications (www.spirent.com) 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. www.spirentfederal.com



    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: Sailaja Tennati, Spirent Communications, Direct Tel
[phone], E-mail [e-mail]; or Ed Sheehan, AT4
wireless, Inc.,Direct Tel [phone], E-mail [e-mail]



    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.


    
    Web site: http://www.spirent.com
              http://www.at4wireless.com
              http://www.spirentfederal.com