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Call flow system and method for use in a VoIP telecommunication system

  • US 8,488,598 B2
  • Filed: 12/07/2010
  • Issued: 07/16/2013
  • Est. Priority Date: 03/02/2006
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving, by a private branch exchange situated in an enterprise network, a call origination request of a call destined to a member having a mobile station and a deskphone within the enterprise network;

    delivering, by the private branch exchange, a first call invite message to an enterprise gateway server situated in the enterprise network;

    delivering, by the private branch exchange, a second call invite message to the deskphone;

    allocating, by the enterprise gateway server, a media port for insertion into a call path allocated for the call; and

    forwarding, by the enterprise gateway server, the first call invite message to a carrier gateway server situated in a mobile carrier network.

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