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Third party call control application program interface

  • US 9,319,440 B2
  • Filed: 01/27/2014
  • Issued: 04/19/2016
  • Est. Priority Date: 03/16/2005
  • Status: Active Grant
First Claim
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1. A computer-implemented method of telephone call completion comprising:

  • (a) receiving a uniform resource locator (URL) including call setup information having an indication of a telephone call to be completed from a first telephonic device to a second telephonic device, wherein the call setup information includes an identification of the first telephonic device and an identification of the second telephonic device;

    (b) initiating a call to the first telephonic device or the second telephonic device using a session initiation protocol (SIP) INVITE method and the received call setup information; and

    (c) transferring the call using a SIP REFER method and the received call setup information in response to an answer of the call to establish the telephone call from the first telephonic device to the second telephonic device.

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