fkayser@worldcell . Corporate headquarters are located in Calabasas, Calif.

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"
WorldCell provides high quality local wireless voice and data services to
the US Government throughout the Central and European Commands utilizing a
variety of US government contracting vehicles.
Tekelec's market-leading hosted IP telephony application server,
the Tekelec 6000, will provide the core VoIP call control function to
the Intercommunications System (ICS) being developed by Rockwell
Collins for upgrades to the aircraft's primary missions systems.

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com

About Tekelec

Tekelec is a leading developer of now and next-generation
signaling and switching telecommunications solutions, network
performance management technology and value-added applications.

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special sof

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rockwellcollins.

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, WorldCell, Inc.
Greg Buckman , WorldCell's Vice President for Sales and Marketing,
commented, "WorldCell continues to provide quality local voice and data
wireless service to the US Armed Forces around the globe, and is proud to be
able to both increase their level of service and save the US Government money
while supporting our warfighters stationed in both the UK and Iceland. "The Tekelec 6000 is proven in the
high-performance networks of telecommunications operators around the
globe, delivering reliable, secure VoIP features and mission-critical
applications. These factors were key in our selection to provide a
mission -critical component of the ICS upgrades for the Navy's
strategic forces.

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utk pac

WorldCell Wins Contract to Supply Wireless Services to the US Air Force

VoIP
call control enables strategic applications such as conferencing and
radio channel monitoring to allow aircraft personnel to communicate
quickly and securely with strategic command centers.

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Leaders

Tekelec (Nasdaq:TKLC), a leading developer of telecommunications
products for next-generation fixed, mobile and packet networks, today
announced it has been selected by Rockwell Collins to provide voice
over Internet Protocol (VoIP) capabilities for the U.

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SILVER SPRING, Md.
WorldCell also assists in providing additional wireless coverage in areas that
are more remote, but mission critical for training exercises and uninterrupted
wireless communications.C.S.

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For more information, please visit www.

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Navy's
E-6B Strategic Command Aircraft, U.S.

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Navy's fleet
of E-6B strategic air command aircraft, which provides a critical
communications link to the U.S.

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tekelec.

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For More Information Contact:
Fayth Kayser
WorldCell , Inc. strategic forces.

force unofficial

, a leading
supplier of global enterprise managed wireless services, today announced that
it has been awarded a contract from the United States Air Force Europe to
supply local wireless telephone and BlackBerry(R) service throughout the
United Kingdom and Iceland.

About WorldCell
WorldCell is a leading wireless services company providing global voice
and data mobile services for government, enterprise and mobile professionals.S.
"The long-promised benefits of VoIP are now exploding across all
industries and areas of life, allowing corporations to run more
efficiently, consumers to communicate more effectively, and the
military to better protect our nation and its leaders," added Lax.

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"Tekelec's application server is a critical component of the ICS,
providing the necessary call control functionality that makes Rockwell
Collins' strategic applications possible," explained Fred Lax,
Tekelec's president and CEO.
Tekelec's innovative solutions are widely deployed in traditional and
next-generation wireline and wireless networks and contact centers
worldwide.com

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Through its proprietary on-
line customer management and billing platforms, and its single point of
contact for ordering and support globally, WorldCell is able to enhance its
customers' wireless experience while reducing their total cost of ownership .

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"

About Rockwell Collins

Rockwell Collins (NYSE:COL) is a leader in the design, production
and support of communications and aviation electronics solutions for
government and commercial customers worldwide.

reserves publicity

Tekelec Selected by Rockwell Collins to Provide VoIP Call Control for U.S. Navy Aircraft

Business Editors/High-Tech Writers

MORRISVILLE, N."
The companies are in the development phase of a multi-year,
multi-million-dollar contract to develop the ICS upgrades .
"Our relationship with Rockwell Collins, one of the world's leading
defense contractors, shows Tekelec's leadership in delivering VoIP for
mission-critical, highly-secure deployments for military and homeland
security initiatives.,
with research and development facilities and sales offices throughout
the world.

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In this
phase, Tekelec is developing a version of Tekelec 6000 that is
optimized for military deployments with specialized conferencing, new
gateway and CPE interfaces, a specialized graphical user interface and
enhanced VoIP features. In January 2004, Forbes
magazine selected Rockwell Collins as the best managed aerospace and
defense company in America. Additional company information is
available at www.

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WorldCell is based in Silver Spring, Maryland, USA with domestic offices in
Washington, DC, and international offices in Germany, Iceland, Bermuda and
Brazil.

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com
+1-301-960-0060

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Tekelec 6000 Application Server to Enable
Mission-Critical Communications for U.