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Apparatus and method for integrated voice gateway

  • US 20030095541A1
  • Filed: 03/04/2002
  • Published: 05/22/2003
  • Est. Priority Date: 07/25/1997
  • Status: Active Grant
First Claim
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32. A communication system comprising:

  • a public switched telephone (PST) network;

    an Internet protocol (IP) network;

    a plurality of private branch exchanges (PBXs) at a plurality of locations, the PBXs coupled to the PST network for routing telephone calls over the PST network;

    a plurality of telephones coupled to the plurality of PBXs;

    a plurality of voice gateways, each voice gateway coupled to one of the plurality of PBXs through a call status-call control link and coupled to the IP network for routing telephone calls over the IP network; and

    feature networking means for providing voice communication features among the plurality of locations over the IP network.

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