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      Ericsson technology strengthens Cingular's nationwide coverage and roaming capabilities

      Press release
      Jan 17, 2002 11:00 (GMT +00:00)

      Ericsson announced that Cingular Wireless, the second largest wireless carrier
      in the U.S., will use Ericsson's JAMBALA(TM) Mobility Gateway to strengthen
      nationwide roaming capabilities, seamlessly linking GSM and TDMA networks.

      Ericsson's JAMBALA(TM) Mobility Gateway forms the infrastructure foundation for
      GSM/ANSI-136 Interoperability Team (GAIT) phones, which allow users to roam
      transparently between GSM and TDMA networks using a single handset.

      Acting as the network's Interworking and Interoperability Function (IIF) node,
      the JAMBALA Mobility Gateway will help Cingular Wireless provide subscribers
      with advanced calling features, two-way short messaging service (SMS) and
      mobile Internet services anywhere in the network - regardless of which
      technology the subscriber is using.

      "Ericsson's JAMBALA Mobility Gateway bridges technically diverse networks,
      helping Cingular Wireless provide its customers with broad coverage and
      increased access to Cingular's nationwide network," said Anders Olin,
      Executive Vice President and General Manager for Ericsson's Cingular Account
      Team. "We are very pleased to be providing this core functionality as Cingular
      transitions to a nationwide high-speed third generation network."

      Ericsson is already working with Cingular to deploy a state-of-the art
      wireless network for delivery of 3G offerings in the US. Ericsson is supplying
      GSM/GPRS/EDGE infrastructure including core network, radio access
      infrastructure, operation and maintenance systems. In addition, Sony Ericsson
      Mobile Communications is developing GAIT handsets to support the migration of
      multi-technology networks.

      Ericsson is shaping the future of Mobile and Broadband Internet communications
      through its continuous technology leadership. Providing innovative solutions
      in more than 140 countries, Ericsson is helping to create the most powerful
      communication companies in the world.

      Read more at http://www.ericsson.com/press

      FOR FURTHER INFORMATION, PLEASE CONTACT

      Kathy Egan, Vice President, Communications
      Ericsson Inc.(U.S.)
      Phone: +1 212 685 4030, E-mail: pressrelations@ericsson.com