Session initiation protocol (SIP) messages incorporating address and/or routing information obtained from a contact header of a redirect message

• US 7,283,516 B1
• Filed: 04/07/2003
• Issued: 10/16/2007
• Est. Priority Date: 04/07/2003
• Status: Expired due to Fees

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Ganesan, Sekar, PARLAMAS, STEPHANIE, Samarasinghe, Harish
• Primary Examiner(s): Pham, Chi
• Assistant Examiner(s): Chou, Albert T.
• Application Number:
  US10/408,814
• Time in Patent Office: 1,653 Days
• Field of Search: 370/351, 370/352, 709/227, 709/228
• US Class Current: 370/352
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

Session Initiation Protocol (SIP) signaling messages, such as a SIP INVITE message and/or a SIP Redirect message, which are adapted for communicating signaling information between a plurality of network elements located on a multi-media services provider system to set-up a call between at least a first communication device and at least a second communication device of a plurality of communication devices. The SIP INVITE message includes a plurality of address and/or routing information located in a request-URI portion. The SIP Redirect message includes a plurality of address and/or routing information located in a contact header portion.

Claims

1. A method of forming a multi-media communication path between at least a first communication device and at least a second communication device, the method comprising:

receiving a request for a multi-media service at a call control element of a multi-media provider system;

processing the call request at the call control element for generating a first Session Initiation Protocol (SIP) INVITE message;

sending the first SIP INVITE message to at least one processor of the multi-media provider system for processing the request for the multi-media service to generate a SIP Redirect message;

receiving the SIP Redirect message at the call control element, wherein the SIP Redirect message includes a contact header portion including a plurality of routing information used by a network routing element of the multi-media provider system to couple at least the first communication device to the second communication device;

receiving the SIP Redirect message at the call control element; and

processing the Redirect message at the call control element for generating a second INVITE message, wherein generating the second INVITE message includes mapping the plurality of routing information from the SIP Redirect message to the second INVITE message and providing the second INVITE message to the network routing element, wherein mapping the plurality of routing information includes concatenating the plurality of routing information to a request-universal resource indicator (URI) located in a header portion of the second INVITE message, wherein concatenating the plurality of routing information includes providing Primary Routing Address information, Primary Routing Address-Nature of Number information, Primary Routing Address-Numbering Plan information, Call Party Station Type information and Carrier Identification Code information in the request-URI of the second INVITE message.

2. The method of claim 1, wherein concatenating the plurality of routing information includes providing Nature of Carrier information in the request-URI of the second INVITE message.

3. The method of claim 2, wherein concatenating the plurality of routing information includes providing Carrier Usage information in the request-URI of the second INVITE message.

4. The method of claim 3, wherein concatenating the plurality of routing information includes providing User information in the request-URI of the second INVITE message.