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Method for RTP setup coordination for talk groups when interconnecting public safety wireless networks and commercial wireless networks
Method for RTP setup coordination for talk groups when interconnecting public safety wireless networks and commercial wireless networks
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机译：在将公共安全无线网络和商业无线网络互连时，用于通话组的RTP设置协调的方法
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摘要
A method and apparatus are provided for a gateway which interconnects public safety wireless networks and commercial wireless networks that support push-to-talk group calls. The gateway translates Real Time Protocol (RTP), Session Invitation Protocol (SIP), and Talk Burst Control Protocol (TBCP)/Real Time Control Protocol (RTCP) messages received from the commercial wireless network and RTP and SIP messages received from the public safety wireless network into a format of the receiving network. The gateway has a call control component operable to set up and tear down RTP connections between the networks, a push-to-talk control component operable to arbitrate calls between wireless communications handsets of both networks, and a transmission control component operable to transfer media packets between the networks. The gateway reduces the number of call set ups required when a caller wants to speak because connections may remain active until the talk group participants leave the push-to-talk group call.
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