SESSION INITIATION PROTOCOL (SIP) MESSAGES INCORPORATING ADDRESS AND/OR ROUTING INFORMATION OBTAINED FROM A CONTACT HEADER OF A REDIRECT MESSAGE

• US 20080084874A1
• Filed: 10/10/2007
• Published: 04/10/2008
• Est. Priority Date: 04/07/2003
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property II LP (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: GANESAN, SEKAR, Samarasinghe, Harish, Parlamas, Stephanie
• Granted Patent: US 8,064,436 B2
• Time in Patent Office: Days
• US Class Current: 370/356
• 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 one first communication device and at least one second communication device, comprising:

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

processing the request at the call control element for generating a first INVITE message;

sending the first 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 Redirect message; and

receiving the Redirect message at the call control element, wherein the 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 said at least one first communication device to said at least one second communication device.

2. The method of claim 1, further comprising:

receiving the 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 comprises mapping the plurality of routing information from the Redirect message to the second INVITE message and providing the second INVITE message to the network routing element.

3. The method of claim 2, wherein mapping the plurality of routing information comprises concatenating the plurality of routing information to a request-universal resource indicator (URI) located in a header portion of the second INVITE message.

4. The method of claim 3, wherein concatenating the plurality of routing information comprises providing Primary Routing Address information in the request-URI of the second INVITE message.

5. The method of claim 4, wherein concatenating the routing information comprises providing Primary Routing Address-Nature of Number information in the request-URI of the second INVITE message.

6. The method of claim 5, wherein concatenating the routing information comprises providing Primary Routing Address-Numbering Plan information in the request-URI of the second INVITE message.

7. The method of claim 6, wherein concatenating the routing information comprises providing Call Party Station Type information in the request-URI of the second INVITE message.

8. The method of claim 1, wherein said first INVITE message and said Redirect message are Session Initiation Protocol (SIP) INVITE message and SIP Redirect message, respectively.

9. A computer readable medium having a Session Initiation Protocol (SIP) Redirect message adapted to communicate predetermined signaling information between a plurality of network elements of a system, the SIP Redirect message comprising a header portion having at least a Contact header field including a plurality of routing information used by a network routing element of the plurality of network elements to couple at least one first communication device to at least one second communication device.

10. The computer readable medium of claim 9, wherein the plurality of routing information comprises Primary Routing Address information.

11. The computer readable medium of claim 10, wherein the plurality of routing information further comprises Primary Routing Address-Nature of Number information.

12. The computer readable medium of claim 11, wherein the plurality of routing information further comprises Primary Routing Address-Numbering Plan information.

13. The computer readable medium of claim 12, wherein the plurality of routing information further comprises Call Party Station Type information.

14. The computer readable medium of claim 13, wherein the plurality of routing information further comprises Carrier Identification Code information.

15. The computer readable medium of claim 14, wherein the plurality of address routing information further comprises Nature of Carrier information.

16. The computer readable medium of claim 14, wherein the plurality of routing information further comprises Carrier Usage information.

17. The computer readable medium of claim 14, wherein the plurality of routing information further comprises User information.

18. A computer readable medium having a Session Initiation Protocol (SIP) INVITE message adapted to communicate predetermined signaling information between a plurality of network elements of a communication system, the SIP INVITE message comprising at least a header portion having at least an INVITE header field including a plurality of routing information used by a network routing element of the plurality of network elements to couple at least one first communication device to at least one second communication device.

19. The computer readable medium of claim 18, wherein the plurality of routing information comprises Primary Routing Address information.

20. The computer readable medium of claim 19, wherein the plurality of routing information further comprises Primary Routing Address-Nature of Number information.

21. The computer readable medium of claim 20, wherein the plurality of routing information further comprises Primary Routing Address-Numbering Plan information.

22. The computer readable medium of claim 21, wherein the plurality of routing information further comprises Call Party Station Type information.

23. The computer readable medium of claim 22, wherein the plurality of routing information further comprises Carrier Identification Code information.

24. The computer readable medium of claim 23, wherein the plurality of routing information further comprises Nature of Carrier information.

25. The computer readable medium of claim 24, wherein the plurality of routing information further comprises Carrier Usage information.