Ericsson, Nokia and Siemens Join Forces to Promote Push to Talk Technology over GPRS and 3G EDGE Networks

Ericsson, Nokia and Siemens are jointly defining specifications for an open standard to speed the adoption of direct-call push to talk service over GPRS. Push to talk is a cost-efficient, simple to use direct voice service for GPRS-based systems that has attracted the interest of many operators. The technology uses the capabilities of the IP Multimedia Subsystem (IMS) as specified by 3GPP for enabling IP connections between mobile phones. Initial trials are expected to begin in the second half of 2003.

The specifications created through this collaboration will be submitted to relevant industry bodies in order to create a standard that will avoid fragmentation and establish a unified push to talk over GPRS market with the same economies of scale that made GSM a global success. The interoperable technology resulting from this work will allow mobile phones and networks to be used for push to talk communication using a variety of radio access networks.

Ericsson, Nokia and Siemens are also inviting 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) by developing products and services based on the open standard they are defining.

"AT&T Wireless supports this joint initiative." said Rod Nelson, CTO of AT&T Wireless, "This new service, which will open to a broad audience, is another way to connect and is an example of how the scale and flexibility of GSM/GPRS/EDGE leads to new and cost effective services."

Cingular Wireless is in support of this cooperation and is evaluating push to talk technology for its customers. "We are always looking for new service offerings like push to talk, that allow our customers to quickly and simply connect to others" said Mike Dobbs, Vice President of Product Management at Cingular.

"This collaboration will ensure that push to talk builds on the future proofed and standardized third generation core network IMS," says Dr. Jan Uddenfeldt, Senior Vice President Technology, Ericsson. "It will only have to be integrated once and is easily maintained, which brings great cost benefits to the operators."

"Push to talk provides cellular operators with a completely new means of connecting people," said Dr. J.T. Bergqvist, Executive Vice President, Nokia. "It is an attractive option for instant voice communication, complementing present dialed voices services. Push to talk's immediate type of communications can reach individuals or groups, and it can also be used to enable direct voice communication with other IMS-based services, such as interactive gaming. GPRS and 3G mobile network operators, having more than 800 million customers today, can easily implement push to talk capability with a low level of additional investment to their existing networks."

"Push to talk services - to be deployed on existing GPRS and future 3G networks -- will provide great value to both business users and consumers, and thus will help operators generate additional revenues," reinforces Harry Strasser, CTO & Senior Vice President, End-to-End Solutions, Siemens. "These applications will enable operators to differentiate themselves from other players in the increasingly competitive landscape of mobile multimedia services. The IMS will provide the IP-based control and will especially enable operators to leverage some of their key strengths -- for example, location information and presence -- to provide end-users with a truly new customer experience."

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