Article: Siemens: Wireless Industry Leaders Conduct First Joint Push-to-Talk over Cellular, PoC, Interoperability Tests.

Business Editors/High-Tech Writers

MUNICH, Germany--(BUSINESS WIRE)--March 16, 2004

Ericsson, Motorola, Siemens and Sony Ericsson Plan Interoperable Products & Solutions for Q2 2004

Ericsson, Motorola, and Siemens (NYSE:SI)(FWB:SIE) announced today the first joint interoperability tests for Push-to-Talk over Cellular (PoC) technology. The tests are designed to help provide network operators with easy integration, interoperability and a competitive environment in which to deploy commercial PoC service. For consumers, the testing helps ensure a simple, seamless Push-to-Talk experience.

The PoC function enables mobile phones to be used ...

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