System and method for interworking H.323 flow control with SIP

• US 20070201367A1
• Filed: 02/27/2006
• Published: 08/30/2007
• Est. Priority Date: 02/27/2006
• Status: Abandoned Application

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Restrick, John, Jones, Paul, Chen, Yun-Chung
• Application Number:
  US11/364,708
• Publication Number:
  US 20070201367A1
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

A system and method are provided for controlling a transfer rate between a first endpoint and a second endpoint, wherein the first endpoint implements a first protocol and the second endpoint implements a second protocol. The system and method may comprise elements for receiving a first control message from the first endpoint, wherein the first control message conforms to the first protocol and comprises instructions for adjusting the transfer rate to a designated bandwidth; generating a second control message that conforms to the second protocol and comprises instructions for adjusting the transfer rate to the designated bandwidth; and sending the second control message to the second endpoint.

Claims

1. A method for controlling a transfer rate between a first endpoint and a second endpoint, wherein the first endpoint implements a first protocol and the second endpoint implements a second protocol, the method comprising:

receiving a first control message from the first endpoint, wherein the first control message conforms to the first protocol and comprises instructions for adjusting the transfer rate to a designated bandwidth;

generating a second control message that conforms to the second protocol and comprises instructions for adjusting the transfer rate to the designated bandwidth; and

sending the second control message to the second endpoint.

2. The method of claim 1, wherein the instructions of the first control message comprise instructions for adjusting the transfer rate for a first stream direction;

and further comprising sending a third control message to the first endpoint that conforms to the first protocol and comprises instructions for adjusting the transfer rate for a second stream direction that is opposite the first stream direction.

3. The method of claim 2, wherein the first protocol is an H.323 protocol;

wherein the second protocol is a Session Initiation Protocol; and

wherein the second control message carries the instructions in a session description.

4. The method of claim 1, wherein the second control message carries the instructions in a session description.

5. The method of claim 1, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies an inactive mode.

6. The method of claim 1, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies a send-only mode.

7. The method of claim 2, wherein the first protocol is a Session Initiation Protocol;

wherein the second protocol is an H.323 protocol; and

wherein the first control message carries the instructions in a session description.

8. A system for controlling a transfer rate between a first endpoint and a second endpoint, wherein the first endpoint implements a first protocol and the second endpoint implements a second protocol, the system comprising:

a receiver component operable to receive a first control message from the first endpoint, wherein the first control message conforms to the first protocol and comprises instructions for adjusting the transfer rate to a designated bandwidth;

a processor component operable to generate a second control message that conforms to the second protocol and comprises instructions for adjusting the transfer rate to the designated bandwidth; and

a transmitter component operable to send the second control message to the second endpoint.

9. The system of claim 8, wherein the instructions of the first control message comprise instructions for adjusting the transfer rate for a first stream direction;

and wherein the transmitter component is further operable to send a third control message to the first endpoint that conforms to the first protocol and comprises instructions for adjusting the transfer rate for a second stream direction that is opposite the first stream direction.

10. The system of claim 9, wherein the first protocol is an H.323 protocol;

wherein the second protocol is a Session Initiation Protocol; and

wherein the second control message carries the instructions in a session description.

11. The system of claim 8, wherein the second control message carries the instructions in a session description.

12. The system of claim 8, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies an inactive mode.

13. The system of claim 8, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies a send-only mode.

14. The system of claim 9, wherein the first protocol is a Session Initiation Protocol;

wherein the second protocol is an H.323 protocol; and

wherein the first control message carries the instructions in a session description.

15. Software encoded in a computer-readable medium comprising computer code such that when executed is operable to:

receive a first control message from a first endpoint that implements a first protocol, wherein the first control message conforms to the first protocol and comprises instructions for adjusting a transfer rate to a designated bandwidth;

generate a second control message that conforms to a second protocol and comprises instructions for adjusting the transfer rate to the designated bandwidth; and

send the second control message to a second endpoint that implements the second protocol.

16. The software of claim 15, wherein the instructions of the first control message comprise instructions for adjusting the transfer rate for a first stream direction;

and wherein the computer code is further operable to send a third control message to the first endpoint that conforms to the first protocol and comprises instructions for adjusting the transfer rate for a second stream direction that is opposite the first stream direction.

17. The software of claim 16, wherein the first protocol is an H.323 protocol;

wherein the second protocol is a Session Initiation Protocol; and

wherein the second control message carries the instructions in a session description.

18. The software of claim 15, wherein the second control message carries the instructions in a session description.

19. The software of claim 15, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies an inactive mode.

20. The software of claim 15, wherein the designated bandwidth is zero;

and wherein the instructions of the second control message comprise a session description that specifies a send-only mode.

21. The software of claim 16, wherein the first protocol is a Session Initiation Protocol;

wherein the second protocol is an H.323 protocol; and

wherein the first control message carries the instructions in a session description.

22. A system for controlling a transfer rate between a first endpoint and a second endpoint, wherein the first endpoint implements a first protocol and the second endpoint implements a second protocol, the system comprising:

means for receiving a first control message from the first endpoint, wherein the first control message conforms to the first protocol and comprises instructions for adjusting the transfer rate to a designated bandwidth;

means for generating a second control message that conforms to the second protocol and comprises instructions for adjusting the transfer rate to the designated bandwidth; and

means for sending the second control message to the second endpoint.