Dynamic call control

• US 7,257,109 B2
• Filed: 05/08/2002
• Issued: 08/14/2007
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Genband US LLC (Ribbon Communications, Inc.)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Sylvain, Dany D.
• Primary Examiner(s): Sam; Phirin
• Application Number:
  US10/142,805
• Publication Number:
  US 20070160031A1
• Time in Patent Office: 1,924 Days
• Field of Search: None
• US Class Current: 370/352
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/785 among multiple network domains, e.g. multilateral agreements
• CPC Class Codes: H04L 47/801 Real time traffic
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/825 Involving tunnels, e.g. MPLS
• CPC Class Codes: H04L 47/829 Topology based
• 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 9/40 Network security protocols
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/1285 Details of finding and selecting a gateway for a particular call
• CPC Class Codes: H04Q 3/0025 Provisions for signalling

Abstract

The present invention allows an originating media gateway to advertise available resources so that one or more media gateway controllers can interact with a terminating media gateway to determine the best communication scheme to use when establishing a communication session between the originating and terminating media gateways. The communication scheme is selected based on the capabilities of the terminating media gateway in light of the resources advertised by the originating media gateway. The communication scheme for any given call is selected dynamically on a call-by-call basis.

Claims

1. A method for providing call control comprising:

a) receiving first information from an originating media gateway initiating a communication session, the first information bearing on a plurality of different communication schemes available at the originating media gateway for facilitating the communication session;

b) selecting a communication scheme available at a terminating media gateway for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes; and

c) sending second information bearing on the selected communication scheme to the originating media gateway, wherein the originating media gateway using determines which of the plurality of communication schemes available at the originating media gateway to use for the communication session based on the second information,

wherein the communication schemes include at least one of the group consisting of voice over ATM, voice over IP, voice over frame relay, voice over IPv4, voice over IPv6, and voice over MPLS.

2. The method of claim 1 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point used by the originating media gateway to send and receive packets for the communication session.

3. The method of claim 2 wherein the second information includes a terminating port identifying a connection point used by the terminating media gateway to send and receive packets for the communication session.

4. The method of claim 1 wherein the first information includes a plurality of originating media capabilities associated with the plurality of communication schemes, each originating media capability identifying a format for the originating media gateway to use to exchange packets with the terminating media gateway for the communication session.

5. The method of claim 4 wherein the second information includes a terminating media capability identifying a format for the terminating media gateway to use to exchange packets with the originating media gateway for the communication session.

6. The method of claim 5 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point used by the originating media gateway to send and receive packets for the communication session, and the second information includes a terminating port identifying a connection point used by the terminating media gateway to send and receive packets for the communication session.

7. The method of claim 1 wherein the first information includes a cost metric bearing on a relative cost for facilitating the plurality of communication schemes and wherein the communication scheme is selected based at least in part on the cost metric.

8. The method of claim 1 wherein the selecting step further comprises:

a) effecting delivery of the first information to the terminating media gateway, which will select the communication scheme available at the terminating media gateway for facilitating the communication session and create the second information; and

b) receiving the second information created by the terminating media gateway.

9. A media gateway comprising:

a) a circuit-switched interface;

b) at least one packet interface supporting a plurality of different communication schemes; and

c) a control system associated with the circuit-switched interface and the at least one packet interface and adapted to;

i) send first information to a media gateway controller to initiate a communication session with a terminating media gateway, the first information bearing on a plurality of communication schemes available for facilitating the communication session with the terminating media gateway;

ii) receive second information bearing on a selected communication scheme available at the terminating media gateway for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes; and

iii) transmit packets for the communication session to the terminating media gateway using the selected communication scheme,

wherein the communication schemes include at least one of the group consisting of voice over ATM, voice over IP, voice over frame relay, voice over IPv4, voice over IPv6, and voice over MPLS.

10. The media gateway of claim 9 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point used by the originating gateway to send and receive packets for the communication session.

11. The media gateway of claim 10 wherein the second information includes a terminating port identifying a connection point for the terminating media gateway to send and receive packets for the communication session.

12. The media gateway of claim 9 wherein the first information includes a plurality of originating media capabilities associated with the plurality of communication schemes, each originating media capability identifying a format for the control system to use to exchange packets with the terminating media gateway for the communication session.

13. The media gateway of claim 9 wherein the second information includes a terminating media capability identifying a format for the terminating media gateway to use to exchange packets with the originating media gateway for the communication session.

14. The media gateway of claim 13 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating gateway to send and receive packets for the communication session, and the second information includes a terminating port identifying a connection point for the terminating media gateway to send and receive packets for the communication session.

15. A media gateway comprising:

a) a circuit-switched interface;

b) an interface supporting a terminating communication scheme; and

c) a control system associated with the circuit-switched interface and the interface and adapted to;

i) receive first information from an originating media gateway initiating a communication session via a media gateway controller, the first information bearing on a plurality of communication schemes available for facilitating the communication session at the originating media gateway;

ii) select a communication scheme for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes and the terminating communication scheme; and

iii) send second information bearing on the selected communication scheme for facilitating the communication session for delivery to the originating media gateway,

wherein the communication schemes include at least one of the group consisting of voice over ATM, voice over IP, voice over frame relay, voice over IPv4, voice over IPv6, and voice over MPLS.

16. The media gateway of claim 15 wherein the control system is adapted to transmit packets for the communication session to the originating media gateway using the selected communication scheme.

17. The media gateway of claim 15 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating media gateway to send and receive packets for the communication session.

18. The media gateway of claim 17 wherein the second information includes a terminating port identifying a connection point to send and receive packets for the communication session.

19. The media gateway of claim 15 wherein the first information includes a plurality of originating media capabilities associated with the plurality of communication schemes, each originating media capability identifying a format for the originating media gateway to use to exchange packets with the terminating media gateway for the communication session.

20. The media gateway of claim 19 wherein the second information includes a terminating media capability identifying a format to use to send packets to the originating media gateway for the communication session.

21. The media gateway of claim 20 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating media gateway to send and receive packets for the communication session, and the second information includes a terminating port identifying a connection point to send and receive packets for the communication session.

22. A system for providing call control comprising:

a) means for receiving first information from an originating media gateway initiating a communication session, the first information bearing on a plurality of different communication schemes available at the originating media gateway for facilitating the communication session;

b) means for selecting a communication scheme available at a terminating media gateway for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes; and

c) means for sending second information bearing on the selected communication scheme to the originating media gateway, wherein the originating media gateway using determines which of the plurality of communication schemes available at the originating media gateway to use for the communication session based on the second information,

wherein the communication schemes include at least one of the group consisting of voice over ATM, voice over IP, voice over frame relay, voice over IPv4, voice over IPv6, and voice over MPLS.

23. The system of claim 22 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating media gateway to send and receive packets for the communication session.

24. The system of claim 23 wherein the second information includes a terminating port identifying a connection point for the terminating media gateway to send and receive packets for the communication session.

25. The system of claim 22 wherein the first information includes a plurality of originating media capabilities associated with the plurality of communication schemes, each originating media capability identifying a format for the originating media gateway to use to exchange packets with the terminating media gateway for the communication session.

26. The system of claim 25 wherein the second information includes a terminating media capability identifying a format for the terminating media gateway to use to exchange packets with the originating media gateway for the communication session.

27. The system of claim 26 wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating media gateway to send and receive packets for the communication session, and the second information includes a terminating port identifying a connection point for the terminating media gateway to send and receive packets for the communication session.

28. The system of claim 22 further comprising:

a) means for effecting delivery of the first information to the terminating media gateway, which will select the communication scheme available at the terminating media gateway for facilitating the communication session and create the second information; and

b) means for receiving the second information created by the terminating media gateway.

29. A method for providing call control comprising:

a) receiving first information from an originating media gateway initiating a communication session, the first information bearing on a plurality of different communication schemes available at the originating media gateway for facilitating the communication session;

b) selecting a communication scheme available at a terminating media gateway for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes; and

c) sending second information bearing on the selected communication scheme to the originating media gateway, wherein the originating media gateway using determines which of the plurality of communication schemes available at the originating media gateway to use for the communication session based on the second information,

wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point used by the originating media gateway to send and receive packets for the communication session.

30. A media gateway comprising:

a) a circuit-switched interface;

b) at least one packet interface supporting a plurality of different communication schemes; and

c) a control system associated with the circuit-switched interface and the at least one packet interface and adapted to;

i) send first information to a media gateway controller to initiate a communication session with a terminating media gateway, the first information bearing on a plurality of communication schemes available for facilitating the communication session with the terminating media gateway;

ii) receive second information bearing on a selected communication scheme available at the terminating media gateway for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes; and

iii) transmit packets for the communication session to the terminating media gateway using the selected communication scheme,

wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point used by the originating gateway to send and receive packets for the communication session.

31. A media gateway comprising:

a) a circuit-switched interface;

b) an interface supporting a terminating communication scheme; and

c) a control system associated with the circuit-switched interface and the interface and adapted to;

i) receive first information from an originating media gateway initiating a communication session via a media gateway controller, the first information bearing on a plurality of communication schemes available for facilitating the communication session at the originating media gateway;

ii) select a communication scheme for facilitating the communication session, the selected communication scheme corresponding to one of the plurality of different communication schemes and the terminating communication scheme; and

iii) send second information bearing on the selected communication scheme for facilitating the communication session for delivery to the originating media gateway,

wherein the first information includes a plurality of originating ports associated with the plurality of communication schemes, each originating port identifying a connection point for the originating media gateway to send and receive packets for the communication session.