METHOD AND APPARATUS FOR MERGING CALL COMPONENTS DURING CALL RECONSTRUCTION

• US 20080049770A1
• Filed: 10/29/2007
• Published: 02/28/2008
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Arlington Technologies, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Avaya Technology Corporation Miami Lakes FLA US
• Inventors: Gillespie, Donald, Velamala, Vivekananda, Marwah, Manish
• Granted Patent: US 7,738,360 B2
• Time in Patent Office: Days
• US Class Current: 370/401
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

The present invention is directed to a secondary communication server 216 for assuming control of a communication formerly controlled by a primary communication server 212 in the event of a failure, comprising:

• • (a) an input operable to (i) receive, from a first communication node 204a, first communication information, wherein the first communication information is associated with the communication and comprises a first node identifier 236a and/or a communication identifier 240a, the first node identifier 236a is associated with a second communication node 204b, the communication identifier is associated with the communication, and the second communication node 204b comprises second communication information associated with the communication and (ii) thereafter receive, from the second communication node 204b, the second communication information; and
  • (b) a reconstruction agent 228 operable to identify the second communication information based on the first node identifier 236a and/or communication identifier 240a.

Claims

1-22. -22. (canceled)

23. A first media gateway, comprising:

a first node identifier associated with a second media gateway, the first and second media gateways handling a common communication, the common communication involving an inter gateway connection between the first and second media gateways, and the first node identifier being further associated with the common communication.

24. The gateway of claim 23, wherein the first node identifier is at least one of an electronic address of the second gateway, an identifier of a data structure in the second gateway, and an identifier of at least one resource of the second gateway and wherein the data structure and at least one resource are associated with the common communication.

25. The gateway of claim 24, wherein the first node identifier comprises an resource identifier associated with a second ephemeral termination involved in the common communication and a context identifier associated with second context involved in the common communication and wherein the second ephemeral termination and second context are each stored in the second gateway.

26. The gateway of claim 25, wherein the first node identifier is saved by the first gateway as a property of a first context stored by the first gateway, the first and second context each being associated with the common communication.

27. The gateway of claim 23, wherein the first node identifier is transmitted to a backup server when the first media gateway determines that a primary server has failed.

28. The gateway of claim 27, wherein the second gateway is operable to transmit a node identifier associated with the first media gateway to the backup server after the first media gateway has transmitted the first node identifier.

29. The gateway of claim 23, further comprising a communication identifier that identifies a selected communication uniquely among a defined group of communications.

30. The gateway of claim 29, wherein the communication identifier comprises at least one of a session identifier, a session key, and a random variable generated to describe the common communication.

31. In a communication network including a first media gateway and second media gateway handling a common communication that involves an inter gateway connection between the first and second media gateways, wherein the common communication is controlled by a first communication server, a method, comprising:

the first media gateway maintaining a first node identifier associated with the second media gateway and the common communication;

the first media gateway determining that the first communication server is unable to continue controlling the common communication; and

the first media gateway transmitting the first node identifier to a second communication server.

32. The method of claim 31,wherein the second communication server is a backup server to the first communication server.

33. The method of claim 31, wherein the first media gateway determines that the first communication server is unable to continue controlling the common communication by detecting a failure in a signaling channel with the first server.

34. The method of claim 31, further comprising:

the second media gateway maintaining a second node identifier associated with the first media gateway and the common communication;

the second media gateway determining that the first communication server is unable to continue controlling the common communication; and

the second media gateway transmitting the second node identifier to the second communication server.

35. The method of claim 34, wherein the second media gateway transmits the second node identifier to the second communication server after the first media gateway transmits the first node identifier to the second communication server.

36. The method of claim 31, wherein the first node identifier is at least one of an electronic address of the second media gateway, an identifier of a data structure in the second media gateway, and an identifier of at least one resource of the second media gateway and wherein the data structure and at least one resource are associated with the common communication.

37. The method of claim 36, wherein the first node identifier comprises an resource identifier associated with a second ephemeral termination involved in the common communication and a context identifier associated with second context involved in the common communication and wherein the second ephemeral termination and second context are each stored in the second media gateway.

38. The method of claim 37, wherein the first node identifier is saved by the first media gateway as a property of a first context stored by the first media gateway, the first and second context each being associated with the common communication.

39. The method of claim 31, further comprising:

the first media gateway maintaining a communication identifier that identifies a selected communication uniquely among a defined group of communications; and

the first media gateway transmitting the communication identifier to the second communication server.

40. The method of claim 39, wherein the communication identifier is transmitted to the second communication server along with the first node identifier.

41. The method of claim 31, wherein the first media gateway and second media gateway each comprise a common communication identifier, and wherein the second media gateway maintains a second node identifier that is different from the first node identifier.

42. A computer readable medium comprising processor executable instructions operable to perform the steps of claim 31.