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Espoo (pte025/17.02.2003/11:45) - Ericsson http://www.ericsson.com, Nokia http://www.nokia.com and Siemens http://www.siemens.com have joined forces to create an open standard to ease the adoption of push to talk technology over GPRS, as announced in a Nokia press release today.
Based on the IP Multimedia Subsystem (IMS), push to talk is a two-way form of communications that allows users to engage in immediate communication with one or more receivers, similar to Walkie Talkie, by pushing a button on their handsets. Users receiving the transmission hear the sender's voice automatically without having to answer the call. The technology uses the capabilities of the IMS as specified by 3GPP for setting up IP connections between mobile phones.
Ericsson, Nokia and Siemens say their collaboration will create interoperable technology that will allow mobile phones and networks to be used for push to talk communication on a variety of radio access networks.
Initial trials are expected to take place in the second half of 2003. Once the specifications for an open push to talk standard have been defined, these will be submitted to the relevant industry bodies.
Senior Vice President Technology at Ericsson. Dr. Jan Uddenfeldt said: "This collaboration will ensure that push to talk builds on the future proofed and standardized third generation core network IMS. It will only have to be integrated once and is easily maintained, which brings great cost benefits to the operators."
Ericsson, Nokia and Siemens have invited mobile network operators and other manufacturers to join them in creating an open, multi-vendor market for push to talk in the GSM evolution path (GSM/GPRS/EDGE/WCDMA).
According to Nokia, AT & T Wireless and Cingular Wireless have said they would support the new standard.
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