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Architecture, client specification and application programming interface (API) for supporting advanced voice services (AVS) including push to talk on wireless handsets and networks

  • US 7,738,892 B2
  • Filed: 05/11/2005
  • Issued: 06/15/2010
  • Est. Priority Date: 05/24/2002
  • Status: Active Grant
First Claim
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1. An apparatus for providing group voice services in a wireless network, comprising:

  • a mobile unit for communicating with a wireless network in order to provide group voice services with other mobile units;

    the wireless network including a real-time exchange to provide the group voice services therein;

    both the real-time exchange and the mobile unit providing the group voice services using call setup and in-band signaling within the wireless network;

    the real-time exchange switching the voice frames for the group voice services from an originating mobile unit to all terminating mobile units across bearer paths in the wireless network;

    the mobile unit executing a client application therein for performing the call setup and in-band signaling with the wireless network for the group voice services; and

    the mobile unit executing a presence/group management application therein for performing presence and group management functions related to the group voice services in the mobile unit.

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