Push to talk

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.

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 (General Packet Radio Service).

‘Push to talk’ service is a two-way form of communications that allows users to engage in immediate communication with one or more receivers. In use, it provides functions similar to a Walkie Talkie – senders push a button on their handsets, while users receiving the transmission hear the sender’s voice automatically without having to answer the call.

Previous implementations of ‘push to talk’ service in cellular networks have been based on proprietary technologies and have taken place on a limited scale. By bringing the functionality to GSM, over 800 million users in more than 190 countries would be able to take advantage of the technology.

The specifications created through the collaborative efforts of the three vendors will be submitted to relevant industry bodies to create a standard that will establish a unified ‘push to talk ‘ methodology in the GPRS market.

The interoperable technology resulting from the work will also allow mobile phones and networks to be used for push to talk communication using a variety of radio access networks.