System and method for establishing a communication session between two endpoints that do not both support secure media

• US 8,139,566 B2
• Filed: 07/21/2006
• Issued: 03/20/2012
• Est. Priority Date: 07/21/2006
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Mills, David W., Jennings, Cullen F.
• Primary Examiner(s): Rutkowski, Jeffrey M
• Application Number:
  US11/459,193
• Publication Number:
  US 20080019381A1
• Time in Patent Office: 2,069 Days
• Field of Search: 370259-261, 370351-356, 370389-390, 370/400, 370/401, 370/395.2, 709204-205, 709227-229, 380/255, 726/4, 713/185, 713/201, 713/168, 379/88.22, 379/88.23, 358/1.15
• US Class Current: 370/356
• CPC Class Codes: H04L 63/166 at the transport layer
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04M 7/0078 Security; Fraud detection; Fraud prevention

Abstract

A method for establishing a communication session between two endpoints that do not both support secure media includes receiving a registration from a first endpoint. The registration indicating the first endpoint supports secure media and non-secure media. The method also includes receiving a registration from a second endpoint. The registration indicating the second endpoint supports non-secure media. The method also includes receiving a request to establish a communication session between the first endpoint and the second endpoint using secure media. The method further includes establishing the communication session between the first endpoint and the second endpoint via the communications platform using non-secure media.

Claims

1. A method for establishing a communication session between two endpoints, comprising:

receiving a first registration from a first endpoint indicating the first endpoint supports secure media and non-secure media;

receiving a second registration from a second endpoint indicating the second endpoint supports non-secure media;

receiving a request to establish a communication session between the first endpoint and the second endpoint using secure media; and

upon receiving the request to establish the communication session between the first endpoint and the second endpoint using secure media, establishing the communication session from the first endpoint to the second endpoint via a communications platform using non-secure media based on the first registration from the first endpoint indicating the first endpoint support non-secure media and the second registration from the second endpoint indicating the second endpoint supports non-secure media.

2. The method of claim 1, wherein:

the secure media comprises secure real-time transport protocol; and

the non-secure media comprises real-time transport protocol.

3. The method of claim 1, wherein the first registration from the first endpoint comprises a header with a tag indicating that the first endpoint supports receiving a real-time transport protocol answer to a secure real-time transport protocol offer.

4. The method of claim 3, wherein the tag comprises a proprietary fallback element.

5. The method of claim 1, wherein the request to establish a communication session between the first endpoint and the second endpoint using secure media implies the ability to also establish the communication session between the first endpoint and the second endpoint using non-secure media.

6. The method of claim 1, further comprising alerting the first endpoint that the communication session between the first endpoint and the second endpoint is currently using non-secure media.

7. The method of claim 1, further comprising:

sending a first communication containing identification information to the first endpoint; and

receiving a second communication containing identification information from the first endpoint.

8. The method of claim 1, wherein the request to establish the communication session between the first endpoint and the second endpoint using secure media does not contain an explicit indication that non-secure media is supported.

9. The method of claim 1, wherein the registration from the second endpoint indicates the second endpoint does not support secure media.

10. A system for establishing a communication session between two endpoints, comprising:

an interface configured to;

receive a first registration from a first endpoint indicating the first endpoint supports secure media and non-secure media;

receive a second registration from a second endpoint indicating the second endpoint supports non-secure media; and

receive a request to establish a communication session between the first endpoint and the second endpoint using secure media; and

a processor coupled to the interface and configured to, upon receiving the request to establish the communication session between the first endpoint and the second endpoint using secure media, establish the communication session from the first endpoint to the second endpoint via communications platform using non-secure media based on the first registration from the first endpoint indicating the first endpoint supports non-secure media and the second registration from the second endpoint indicating the second endpoint supports non-secure media.

11. The system of claim 10, wherein:

the secure media comprises secure real-time transport protocol; and

the non-secure media comprises real-time transport protocol.

12. The system of claim 10, wherein the first registration from the first endpoint comprises a header with a tag indicating that the first endpoint supports receiving a real-time transport protocol answer to a secure real-time transport protocol offer.

13. The system of claim 12, wherein the tag comprises a proprietary fallback element.

14. The system of claim 10, wherein the request to establish a communication session between the first endpoint and the second endpoint using secure media implies the ability to also establish the communication session between the first endpoint and the second endpoint using non-secure media.

15. The system of claim 10, wherein the processor is further configured to alert the first endpoint that the communication session between the first endpoint and the second endpoint is using non-secure media.

16. The system of claim 10, wherein the interface is further configured to:

send a first communication containing identification information to the first endpoint; and

receive a second communication containing identification information from the first endpoint.

17. A non-transitory computer readable storage medium comprise code, that when executed by a processor is configured to:

receive a first registration from a first endpoint indicating the first endpoint supports secure media and non-secure media;

receive a second registration from a second endpoint indicating the second endpoint supports non-secure media;

receive a request to establish a communication session between the first endpoint and the second endpoint using secure media; and

upon receiving the request to establish the communication session between the first endpoint and the second endpoint using secure media, establish the communication session from the first endpoint to the second endpoint via a communications platform using non-secure media based on the first registration from the first endpoint indicating the first endpoint supports non-secure media and the second registration from the second endpoint indicating the second endpoint supports non-secure media.

18. The medium of claim 17, wherein:

the secure media comprises secure real-time transport protocol; and

the non-secure media comprises real-time transport protocol.

19. The medium of claim 17, wherein the first registration from the first endpoint comprises a header with a tag indicating that the first endpoint supports receiving a real-time transport protocol answer to a secure real-time transport protocol offer.

20. The medium of claim 19, wherein the tag comprises a proprietary fallback element.

21. The medium of claim 17, wherein the request to establish a communication session between the first endpoint and the second endpoint using secure media implies the ability to also establish the communication session between the first endpoint and the second endpoint using non-secure media.

22. The medium of claim 17, wherein the code further comprises code configured to alert the first endpoint that the communication session between the first endpoint and the second endpoint is currently using non-secure media.

23. The medium of claim 17, wherein the code is further configured to:

send a first communication containing identification information to the first endpoint; and

receive a second communication containing identification information from the first endpoint.

24. A system for establishing a communication session between two endpoints that do not both support secure media, comprising:

means for receiving a first registration from a first endpoint indicating the first endpoint supports secure media and non-secure media;

means for receiving a second registration from a second endpoint indicating the second endpoint supports non-secure media;

means for receiving a request to establish a communication session between the first endpoint and the second endpoint using secure media; and

means for upon receiving the request to establish the communication session between the first endpoint and the second endpoint using secure media, establishing the communication session from the first endpoint to the second endpoint via a communications platform using non-secure media based on the first registration from the first endpoint indicating the first endpoint supports non-secure media and the second registration from the second endpoint indicating the second endpoint supports non-secure media.