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Mobile device conference calls via private branch exchange

  • US 7,889,849 B2
  • Filed: 03/21/2007
  • Issued: 02/15/2011
  • Est. Priority Date: 07/14/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a dial request at a first server via a data channel coupled to a mobile device the dial request including contact information for a plurality of intended call recipients;

    transmitting a call initiation instruction to a telephone server coupled to an enterprise in response to the dial request;

    the first server sending data representative of a transaction identifier and a telephone number for the telephone server to the mobile device;

    the mobile device initiating in response to the request a first call leg over a first voice channel, the first call leg between the telephone server and the mobile device, and upon successfully connecting to the telephone server sending the transaction identifier to the telephone server;

    the telephone server initiating a plurality of second call legs over a plurality of second voice channels to establish a plurality of second call legs between the telephone server and a plurality of client devices associated with the plurality of intended recipients in response to receiving the transaction identifier from the mobile device; and

    the telephone server forming a voice conference call between the mobile device and the plurality of client devices by joining the first call leg and the plurality of second call legs.

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