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HYBRID PUSH-TO-TALK FOR MOBILE PHONE NETWORKS

  • US 20100142414A1
  • Filed: 10/20/2009
  • Published: 06/10/2010
  • Est. Priority Date: 10/20/2008
  • Status: Active Grant
First Claim
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1. A system for providing advanced voice services in a cellular telephone network, comprising:

  • a cellular telephone network for making calls between mobiles,wherein the calls are initiated by call setup and in-band signaling within the cellular telephone network and voice frames for the calls are switched between the mobiles by at least one mobile switching center across bearer paths in the cellular telephone network,at least one real-time exchange that interfaces to at least one mobile switching center in the cellular telephone network to provide advanced voice services therein,the advanced voice services providing instant two-way half-duplex voice messaging within a group of users of the cellular telephone network,wherein a first talkburst or volley is transmitted by the real-time exchange from an originating mobile to one or more terminating mobiles on one or more pre-established Internet Protocol (IP) sessions between the real-time exchange and the mobiles,one or more circuit channels are established by the real-time exchange with the mobiles through the mobile switching center in parallel with the first talkburst or volley being transmitted, andsecond and subsequent talkbursts or volleys are transmitted by the real-time exchange from the originating mobile to the terminating mobiles on the circuit channels.

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