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Call routing using information in session initiation protocol messages

  • US 20020141404A1
  • Filed: 12/12/2001
  • Published: 10/03/2002
  • Est. Priority Date: 04/03/2001
  • Status: Abandoned Application
First Claim
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1. A method for establishing an IP telephony session between a first device and a second device, the method comprising:

  • receiving a call establishment message from the first device, the call establishment message including a first routing information in a header portion of the message and a second routing information in a body portion of the message;

    determining an address of the second device based on the first and second routing information; and

    using the address for routing the session to the second device.

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