Alcatel introduced a Push To Talk (PTT) application as part of its IP multimedia communication portfolio. The Alcatel Push To Talk is a VoIP streaming service that turns a mobile phone into a Walkie-Talkie in GPRS and UMTS networks.
Alcatel said its PTT solution can run on a wide variety of handsets already commercialized and equipped with this function. It is based on industry standards such as SIP for signaling and RTP for voice broadcasting. This follows the early specifications of the OMA (Open Mobile Alliance) and uses the capabilities of the IMS (IP Multimedia Sub-system) as specified by 3GPP. http://www.alcatel.com
