System and method for applying a communication feature extension

• US 20070136461A1
• Filed: 12/13/2005
• Published: 06/14/2007
• Est. Priority Date: 12/13/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Donovan, Steven, Moon, Aeryung
• Granted Patent: US 7,797,427 B2
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1063 Application servers providing network services systems providing special services to telephonic subscribers H04M3/42
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1096 Supplementary features, e.g. call forwarding or call holding systems providing special services or facilities to telephony subscribers H04M3/42
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A system and method for applying a communication feature extension includes facilitating an exchange of requests between an originating endpoint and a terminating endpoint using a first identifier associated with the originating endpoint and a second identifier associated with the terminating endpoint. A modified request is received during the exchange. The modified request includes a new identifier representing a selected one of a modified first identifier and a modified second identifier, and an extension providing information about handling the modified request. The extension included in the modified request is determined and applied.

Claims

1. A method for applying a communication feature extension, comprising:

facilitating an exchange of requests between an originating endpoint and a terminating endpoint using a first identifier associated with the originating endpoint and a second identifier associated with the terminating endpoint;

receiving a modified request during the exchange, wherein the modified request includes;

a new identifier representing a selected one of a modified first identifier and a modified second identifier;

an extension providing information about handling the modified request;

determining the extension included in the modified request;

applying the extension.

2. The method of claim 1, further comprising receiving a request from a network element, wherein the request is initiated by the network element.

3. The method of claim 1, further comprising removing the extension from the modified request.

4. The method of claim 1, wherein the new identifier is a modified first identifier, and the extension includes a selected one of a continue token and a skip token.

5. The method of claim 1, wherein the new identifier is a modified second identifier, and the extension includes a selected one of a continue token and a skip token.

6. The method of claim 1, wherein the extension is a continue token, further comprising:

continuing a current phase of the exchange;

using the new identifier during the current phase.

7. The method of claim 1, wherein the extension is a skip token, further comprising terminating a current phase of the exchange.

8. The method of claim 7, wherein the current phase is an originating phase, further comprising beginning a terminating phase of the exchange.

9. The method of claim 7, wherein the current phase is a terminating phase, further comprising beginning contact routing for the new identifier.

10. A computer readable medium including logic for applying a communication feature extension, the logic operable to:

facilitate an exchange of requests between an originating endpoint and a terminating endpoint using a first identifier associated with the originating endpoint and a second identifier associated with the terminating endpoint;

receive a modified request during the exchange, wherein the modified request includes;

a new identifier representing a selected one of a modified first identifier and a modified second identifier;

an extension providing information about handling the modified request;

determine the extension included in the modified request;

apply the extension.

11. The computer readable medium of claim 10, the logic further operable to receive a request from a network element, wherein the request is initiated by the network element.

12. The computer readable medium of claim 10, the logic further operable to remove the extension from the modified request.

13. The computer readable medium of claim 10, wherein the new identifier is a modified first identifier, and the extension includes a selected one of a continue token and a skip token.

14. The computer readable medium of claim 10, wherein the new identifier is a modified second identifier, and the extension includes a selected one of a continue token and a skip token.

15. The computer readable medium of claim 10, wherein the extension is a continue token, the logic further operable to:

continue a current phase of the exchange;

use the new identifier during the current phase.

16. The computer readable medium of claim 10, wherein the extension is a skip token, the logic further operable to terminate a current phase of the exchange.

17. The computer readable medium of claim 16, wherein the current phase is an originating phase, the logic further operable to begin a terminating phase of the exchange.

18. The computer readable medium of claim 16, wherein the current phase is a terminating phase, the logic further operable to begin contact routing for the new identifier.

19. A system for applying a communication feature extension, comprising:

an originating endpoint and a terminating endpoint operable to exchange requests, a first identifier associated with the originating endpoint and a second identifier associated with the terminating endpoint;

a server operable to;

receive a modified request during the exchange, wherein the modified request includes;

a new identifier representing a selected one of a modified first identifier and a modified second identifier;

an extension providing information about handling the modified request;

determine the extension included in the modified request;

apply the extension.

20. The system of claim 19, the server further operable to receive a request from a network element, wherein the request is initiated by the network element.

21. The system of claim 19, the server further operable to remove the extension from the modified request.

22. The system of claim 19, wherein the new identifier is a modified first identifier, and the extension includes a selected one of a continue token and a skip token.

23. The system of claim 19, wherein the new identifier is a modified second identifier, and the extension includes a selected one of a continue token and a skip token.

24. The system of claim 19, wherein the extension is a continue token, the server further operable to:

continue a current phase of the exchange;

use the new identifier during the current phase.

25. The system of claim 19, wherein the extension is a skip token, the server further operable to terminate a current phase of the exchange.

26. The system of claim 25, wherein the current phase is an originating phase, the server further operable to begin a terminating phase of the exchange.

27. The system of claim 25, wherein the current phase is a terminating phase, the server further operable to begin contact routing for the new identifier.

28. A system for applying a communication feature extension, comprising:

means for facilitating an exchange of requests between an originating endpoint and a terminating endpoint using a first identifier associated with the originating endpoint and a second identifier associated with the terminating endpoint;

means for receiving a modified request during the exchange, wherein the modified request includes;

a new identifier representing a selected one of a modified first identifier and a modified second identifier;

an extension providing information about handling the modified request;

means for determining the extension included in the modified request;

means for applying the extension.