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T-Mobile UK Selects Telcordia Global Dialing Data Solution

Telcordia Working with Leading Mobile Operator to Thwart Fraud, Improve Customer Experience

PISCATAWAY, NJ - January 22, 2008 - T-Mobile UK is the latest Tier 1 service provider to select the Telcordia (www.telcordia.com) Global Dialing Data solution. With more cell phones than people, the United Kingdom is one of the world's most competitive wireless markets. Telcordia Global Dialing Data gives T-Mobile an unprecedented level of control and visibility into the network to help T-Mobile UK improve profitability and competitive positioning.

With more than 800,000 dial codes in more than 230 markets, Telcordia Global Dialing Data provides the most comprehensive, accurate and authoritative dial code data in the world — a major reason why more than 20 fixed and mobile operators worldwide have chosen the solution since it was introduced in 2005.

"With improved billing capabilities and potential fraud eliminated, T-Mobile UK now has another way to make sure every call counts thanks to the Telcordia Global Dialing Data solution," said Stephen Ornadel, Head of Carrier Services. "With this solution, T-Mobile UK will realize savings that can be used to improve services for our 17 million customers."

Telcordia Global Dialing Data is a component of the Telcordia® Service Interconnection Registry. It includes continuous updates as dialing code and numbering plan changes occur as well as future numbering plan change notifications and activity reports. Telcordia Service Interconnection Registry enables accurate routing and rating of voice, SMS, and multimedia services over traditional Public Switched Telephone Network (PSTN) and IP.

"The Telcordia Global Dialing Data solution is another example of how Telcordia's innovation, experience and reach are helping service providers reduce costs and improve their competitive positions," said Richard Jacowleff, President, Interconnection Solutions, Telcordia. "The fact that T-Mobile UK and more than 20 other service providers worldwide now use Global Dialing Data highlights the need for this type of solution in today's competitive telecom marketplace."

About T-Mobile UK
T-Mobile is one of the world's largest mobile operators with more than 112 million customers worldwide and in the UK it is the network of choice for approaching 17 million customers, making it one of the largest networks.

T-Mobile has a range of innovative products and services such as Flext, a unique tariff with flexible pricing; U-Fix, a tariff that combines pay-as-you-go and a monthly contract and web'n'walk, which enables customers to surf websites on the move. T-Mobile's network coverage is among the best in the UK (over 99% of the UK population) with one of the lowest dropped call rates. It offers the largest worldwide Wi-Fi network, with over 1,000 HotSpots in business-friendly locations in the UK and 21,000 worldwide, and offers the fastest HSDPA network across the UK with speeds of up to 1.8mb per second.

For more information about T-Mobile UK, please visit www.t-mobile.co.uk.

About Telcordia

Contact:
Sharon Oddy
Telcordia Technologies, Inc.
(732) 699-4203
oddys@telcordia.com