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.



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