Method and apparatus for backhaul of telecommunications signaling protocols over packet-switching networks

• US 7,346,047 B1
• Filed: 11/06/2003
• Issued: 03/18/2008
• Est. Priority Date: 06/01/1999
• Status: Expired due to Fees

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Auerbach, David, Berg, Diane M., Morneault, Kenneth Alfred
• Primary Examiner(s): Lee; Andrew C.
• Application Number:
  US10/704,051
• Time in Patent Office: 1,594 Days
• Field of Search: None
• US Class Current: 370/352
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/6481 Speech, voice
• CPC Class Codes: H04L 2012/6486 Signalling Protocols
• CPC Class Codes: H04L 41/0226 Mapping or translating multiple network management protocols
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 7/009 in systems involving PBX or KTS networks
• CPC Class Codes: H04M 7/1255 where the switching fabric and the switching logic are decomposed such as in Media Gateway Control

Abstract

A generic backhaul protocol is provided for passing telecommunication signaling messages according to multiple signaling protocols between a gateway and a media gateway controller. A message in accordance with the generic backhaul protocol includes a message header that indicates the signaling protocol and/or the channel being used on the gateway. The message also includes a message body that contains a protocol data unit encapsulating signaling data in accordance with a signaling protocol.

Claims

1. A computer-readable medium for backhauling signaling data in voice calls to a media gateway controller, the computer-readable medium carrying one or more instructions which, when executed by one or more processors cause the one or more processors to perform the steps of:

receiving a first voice call in accordance with a first signaling protocol;

extracting the first signaling data from the first voice call;

packaging the first signaling data into a first message, the first message including a first message header indicating the first signaling protocol and first message body including a first protocol data unit encapsulating the first signaling data; and

transmitting the first message to the media gateway controller.

2. The computer-readable medium of claim 1, further comprising one or more additional instructions which, when executed by the one or more processors, cause the one or more processors to perform the additional steps of:

receiving a second voice call with a first signaling protocol incompatible with the first signaling protocol;

extracting the second signaling data from the second voice call;

packaging the second signaling data into a first message, the second message including a first message header indicating the second signaling protocol and second message body including a second protocol data unit encapsulating the second signaling data; and

transmitting the second message to the media gateway controller.

3. The computer-readable medium of claim 2, wherein:

the first voice call is received over a first channel;

the second voice call is received over a second channel;

the first message header further indicates the first channel; and

the second message header further indicates the second channel.

4. The computer-readable medium of claim 3, wherein the first channel and the second channel are of the same protocol type and the first voice call and the second voice call are multiplexed over the same channel.

5. The computer-readable medium of claim 3, wherein the first channel and the second channel are of different protocol types.

6. A gateway for backhauling signaling data in voice calls to a media gateway controller, the gateway being configured to:

receive a first voice call in accordance with a first signaling protocol;

extract the first signaling data from the first voice call;

package the first signaling data into a first message, the first message including a first message header indicating the first signaling protocol and first message body including a first protocol data unit encapsulating the first signaling data; and

transmit the first message to the media gateway controller.

7. The gateway of claim 6, wherein the gateway is further configured to:

receive a second voice call with a first signaling protocol incompatible with the first signaling protocol;

extract the second signaling data from the second voice call;

package the second signaling data into a first message, the second message including a first message header indicating the second signaling protocol and second message body including a second protocol data unit encapsulating the second signaling data; and

transmit the second message to the media gateway controller.

8. The gateway of claim 7, wherein:

the first voice call is received over a first channel;

the second voice call is received over a second channel;

the first message header further indicates the first channel; and

the second message header further indicates the second channel.

9. The gateway of claim 8, wherein the first channel and the second channel are of the same protocol type and the first voice call and the second voice call are multiplexed over the same channel.

10. The gateway of claim 8, wherein the first channel and the second channel are of different protocol types.

11. A gateway for backhauling signaling data in voice calls to a media gateway controller, the gateway comprising:

means for receiving a first voice call in accordance with a first signaling protocol;

means for extracting the first signaling data from the first voice call;

means for packaging the first signaling data into a first message, the first message including a first message header indicating the first signaling protocol and first message body including a first protocol data unit encapsulating the first signaling data; and

means for transmitting the first message to the media gateway controller.

12. The gateway of claim 11, wherein the gateway further comprises:

means for receiving a second voice call with a first signaling protocol incompatible with the first signaling protocol;

means for extracting the second signaling data from the second voice call;

means for packaging the second signaling data into a first message, the second message including a first message header indicating the second signaling protocol and second message body including a second protocol data unit encapsulating the second signaling data; and

means for transmitting the second message to the media gateway controller.

13. The gateway of claim 12, wherein:

the first voice call is received over a first channel;

the second voice call is received over a second channel;

the first message header further indicates the first channel; and

the second message header further indicates the second channel.

14. The gateway of claim 13, wherein the first channel and the second channel are of the same protocol type and the first voice call and the second voice call are multiplexed over the same channel.

15. The gateway of claim 13, wherein the first channel and the second channel are of different protocol types.

16. A telecommunications device, comprising:

communication interface means in communication with a gateway;

processing means coupled to the communication interface; and

memory means coupled to the processing means and storing instructions which, when executed by the processing means, cause the telecommunications device to perform the steps of;

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

receiving a first message from the gateway, the message including a first message header indicating the first signaling protocol and a first message body containing a first protocol data unit encapsulating the first signaling data; and

identifying and causing a first protocol adapter that is instantiated to process signaling data according to the first signaling protocol to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

17. The telecommunications device of claim 16, wherein the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional steps of:

receiving a second message from the gateway, the message including a second message header indicating a second signaling protocol incompatible with the first signaling protocol and a second message body containing a second protocol data unit encapsulating the second signaling data; and

identifying and causing a second protocol adapter that is instantiated to process signaling data according to the second signaling protocol to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

18. The telecommunications device of claim 17, wherein:

the first message header further indicates a first channel on the gateway;

the second message header further indicates a second channel on the gateway;

the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional steps of;

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels on the gateway;

identifying and causing a first call instance that is instantiated to process a first voice call borne on the first channel and formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process a second voice call borne on the second channel and formatted according to the second signaling protocol to process the second signaling data on the second message header.

19. The telecommunications device of claim 16, wherein the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

20. A method for processing data in a telecommunications device, the method comprising the computer-implemented steps of:

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

receiving a first message from a gateway, the first message including a first message header indicating a first signaling protocol and a first message body containing a first protocol data unit encapsulating first signaling data; and

identifying and causing a first protocol adapter that is instantiated to process signaling data according to the first signaling protocol to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

21. The method of claim 20, further comprising the computer-implemented steps of:

receiving a second message from the gateway, the message including a second message header indicating a second signaling protocol incompatible with the first signaling protocol and a second message body containing a second protocol data unit encapsulating second signaling data; and

identifying and causing a second protocol adapter that is instantiated to process signaling data according to the second signaling protocol to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

22. The method of claim 21, wherein:

the first message header further indicates a first channel on the gateway;

the second message header further indicates a second channel on the gateway;

the method further comprises the computer-implemented steps of;

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels on the gateway;

identifying and causing a first call instance that is instantiated to process a first voice call borne on the first channel and formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process a second voice call borne on the second channel and formatted according to the second signaling protocol to process the second signaling data on the second message header.

23. The method of claim 20, further comprising the computer-implemented step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

24. A computer-readable medium for processing data in a telecommunications device, the computer-readable medium carrying one or more instructions which, when processed by one or more processors, cause the one or more processors to perform the steps of:

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

receiving a first message from a gateway, the first message including a first message header indicating a first signaling protocol and a first message body containing a first protocol data unit encapsulating first signaling data; and

identifying and causing a first protocol adapter that is instantiated to process signaling data according to the first signaling protocol to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

25. The computer-readable medium of claim 24, further comprising one or more additional instructions which, when executed by the one or more processors, causes the one or more processors to perform the additional steps of:

receiving a second message from the gateway, the message including a second message header indicating a second signaling protocol incompatible with the first signaling protocol and a second message body containing a second protocol data unit encapsulating second signaling data; and

identifying and causing a second protocol adapter that is instantiated to process signaling data according to the second signaling protocol to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

26. The computer-readable medium of claim 25, wherein:

the first message header further indicates a first channel on the gateway;

the second message header further indicates a second channel on the gateway;

the computer-readable medium further comprises one or more additional instructions which, when executed by the one or more processors, causes the one or more processors to perform the additional steps of;

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels on the gateway;

identifying and causing a first call instance that is instantiated to process a first voice call borne on the first channel and formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process a second voice call borne on the second channel and formatted according to the second signaling protocol to process the second signaling data on the second message header.

27. The computer-readable medium of claim 24, further comprising one or more additional instructions which, when executed by the one or more processors, causes the one or more processors to perform the additional step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

28. A telecommunications device, comprising:

communication interface means in communication with a gateway;

processing means coupled to the communication interface; and

memory means coupled to the processing means and storing instructions which, when executed by the processing means, cause the telecommunications device to perform the steps of;

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels of the gateway;

receiving a first message from the gateway, the message including a first message header indicating the first channel and a first message body containing a first protocol data unit encapsulating the first signaling data; and

identifying and causing a first call instance that is instantiated to process signaling data borne on the first channel to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

29. The telecommunications device of claim 28, wherein the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional steps of:

receiving a second message from the gateway, the message including a second message header indicating a second channel of the gateway other the first channel and a second message body containing a second protocol data unit encapsulating the second signaling data; and

identifying and causing a second call instance that is instantiated to process signaling data borne on the second channel to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

30. The telecommunications device of claim 29, wherein:

the first message header further indicates a first signaling protocol of the first protocol data unit;

the second message header further indicates a second signaling protocol of the second protocol data unit;

the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional steps of;

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

identifying and causing a first protocol adapter that is instantiated to process the first voice call formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process the second voice call formatted according to a second signaling protocol to process the first signaling data.

31. The telecommunications device of claim 28, wherein the memory means stores additional instructions which, when executed by the processing means, cause the telecommunications device to perform the additional step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

32. A method for processing data in a telecommunications device, the method comprising the computer-implemented steps of:

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels of the gateway;

receiving a first message from the gateway, the message including a first message header indicating the first channel and a first message body containing a first protocol data unit encapsulating the first signaling data; and

identifying and causing a first call instance that is instantiated to process signaling data borne on the first channel to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

33. The method of claim 32, further comprising the computer-implemented steps of:

receiving a second message from the gateway, the message including a second message header indicating a second channel of the gateway other the first channel and a second message body containing a second protocol data unit encapsulating the second signaling data; and

identifying and causing a second call instance that is instantiated to process signaling data borne on the second channel to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

34. The method of claim 33, wherein:

the first message header further indicates a first signaling protocol of the first protocol data unit;

the second message header further indicates a second signaling protocol of the second protocol data unit;

the method further comprises the computer-implemented steps of;

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

identifying and causing a first protocol adapter that is instantiated to process the first voice call formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process the second voice call formatted according to a second signaling protocol to process the first signaling data.

35. The method of claim 32, further comprising the computer-implemented step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

36. A computer-readable medium for processing data in a telecommunications device, the computer-readable medium carrying one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of:

instantiating a plurality of call instances for processing signaling data borne on a plurality of channels of the gateway;

receiving a first message from the gateway, the message including a first message header indicating the first channel and a first message body containing a first protocol data unit encapsulating the first signaling data; and

identifying and causing a first call instance that is instantiated to process signaling data borne on the first channel to process the first signaling data encapsulated in the first protocol data unit based on the first message header.

37. The computer-readable medium of claim 36, further comprising one or more additional instructions which, when executed by the one or more processors, cause the one or more processors to perform the additional steps of:

receiving a second message from the gateway, the message including a second message header indicating a second channel of the gateway other the first channel and a second message body containing a second protocol data unit encapsulating the second signaling data; and

identifying and causing a second call instance that is instantiated to process signaling data borne on the second channel to process the second signaling data encapsulated in the second protocol data unit based on the second message header.

38. The computer-readable medium of claim 37, wherein:

the first message header further indicates a first signaling protocol of the first protocol data unit;

the second message header further indicates a second signaling protocol of the second protocol data unit;

the computer-readable medium further comprises one or more additional instructions which, when executed by the one or more processors, cause the one or more processors to perform the additional steps of;

instantiating a plurality of protocol adapters for processing signaling data according to a plurality of signaling protocols;

identifying and causing a first protocol adapter that is instantiated to process the first voice call formatted according to the first signaling protocol to process the first signaling data based on the first message header; and

identifying and causing a second call instance that is instantiated to process the second voice call formatted according to a second signaling protocol to process the first signaling data.

39. The computer-readable medium of claim 36, further comprising one or more additional instructions which, when executed by the one or more processors, cause the one or more processors to perform the additional step of sending a message to the gateway to causing a channel of the gateway to come into or go out of service.

40. A method for backhauling signaling data in voice calls in a telecommunications network, the method comprising the computer-implemented steps of:

originating a first voice call bearing first signaling data according to a first signaling protocol;

controlling one or more gateways, in communication with the packet-switching network and a terminating node terminating the voice call, based on the first signaling data to provide voice communications over the packet-switching network between the first node and a terminating gateway; and

extracting the first signaling data from the first voice call, packaging the first signaling data into a first message, and transmitting the first message to a media gateway controller, the first message including a first message header indicating the first signaling protocol and a first message body containing a first protocol data unit encapsulating the first signaling data.

41. The method of claim 40, further comprising the computer-implemented steps of:

extracting second signaling data from a second voice call;

packaging the second signaling data into a second message; and

transmitting the second message to the media gateway controller, the second message including a second message header indicating the second signaling protocol and a second message body containing a second protocol data unit encapsulating the second signaling data.

42. The method of claim 41, wherein:

the first message header further indicates the first channel; and

the second message header further indicates the second channel.

43. The method of claim 42, wherein the first channel and the second channel are of the same signaling protocol type and are multiplexed over the same IP session group.

44. The method of claim 42, wherein the first channel and the second channel are of different protocol types.

45. A method for backhauling signaling data in voice calls in a telecommunications network, the method comprising the computer-implemented steps of:

originating a first voice call bearing first signaling data;

controlling a first gateway and a terminating gateway, in communication with a packet-switching network and a terminating node terminating the voice call, based on the first signaling data to provide voice communications over the packet-switching network between the first node and the terminating gateway; and

extracting the first signaling data from the first voice call, packaging the first signaling data into a first message, and transmitting the first message to the media gateway controller, the first message including a first message header indicating the first channel and a first message body containing a first protocol data unit encapsulating the first signaling data.

46. The method of claim 45, further comprising the computer-implemented steps of:

extracting second signaling data from a second voice call;

packaging the second signaling data into a second message; and

transmitting the second message to the media gateway controller, the second message including a second message header indicating the second channel and a second message body containing a second protocol data unit encapsulating the second signaling data.

47. The method of claim 46, wherein:

the first signaling data is formatted according to a first signaling protocol;

the second signaling data is formatted according to a second signaling protocol;

the first message header further indicates the first signaling protocol; and

the second message header further indicates the second signaling protocol.

48. The method of claim 47, wherein the first signaling protocol and the second signal protocol are compatible.

49. The method of claim 47, wherein the first signaling protocol and the second signaling protocol are incompatible.