Method and apparatus for handing off control of service access over a cable IP network

• US 7,292,590 B1
• Filed: 12/10/2002
• Issued: 11/06/2007
• Est. Priority Date: 12/10/2002
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Chen, Jennifer H., Nortz, Douglas M., Sayko, Robert J.
• Primary Examiner(s): Pezzlo; John
• Application Number:
  US10/315,587
• Time in Patent Office: 1,792 Days
• Field of Search: 370352-356, 370/400, 370/401, 370/486, 370/487, 370/252, 379/88.17, 455/406
• US Class Current: 370/401
• 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

Abstract

In a communication network that provides a path through a cable IP network between sending and receiving terminals residing on respective networks (e.g., an HFC, and/or PSTN network) controlled by different network managers or service providers, a controller hands off control of service access of the terminals between the service providers. Subscriber terminals may include broadband telephony interfaces, cable modems, or multimedia terminal adapters. To effect hand-off control, configurable modules of the terminals enable them to respond directly to a network manager (e.g., cable modem termination system or call management server) according to instructions supplied by the controller based either on subscriber authorization, database information, call type, dialing plan, and/or other parameters. Transfer of call control may also occur on a call-by-call basis. Further, a usage server collects network usage information of the respective terminals or subscribers to determine user fees between competitive networks.

Claims

1. A method of transferring call control between a first terminal and a second terminal communicating through a cable IP network where the first terminal resides on an originating network and the second terminal resides on a receiving network, the method comprising:

controlling, by a first service provider, access of the first terminal relative to the originating network and cable IP network via a provisionable module that enables the first terminal to respond to call setup and control messages,

controlling, by a second service provider, access of the second terminal relative to the receiving network and the cable IP network via a provisionable module that enables the second terminal to respond to call setup and control messages supplied thereto,

in response to a call control parameter issued by a call agent communicating with the originating and receiving networks over the cable IP network, provisioning the first terminal to respond to call setup and control messages issued directly from the receiving network whereby to effect a hand-off of control of the first terminal from the originating network to the receiving network.

2. The method of claim 1, further comprising the call agent obtaining authorization from a subscriber prior to effecting hand-off of control.

3. The method of claim 1, further comprising the call agent obtaining call setup and control information to provision the first terminal from at least one of:

a subscriber, a database, a call type, and a dialing plan.

4. The method of claim 3, wherein said provisioning of the first terminal occurs on a call-by-call basis.

5. The method of claim 3, further comprising monitoring usage of the first and second terminals to determine user fees for use of said networks.

6. The method of claim 5 wherein at least one of said originating and receiving networks comprises a hybrid coaxial fiber network.

7. The method of claim 1, wherein each of the first and second terminals comprises one of a broadband terminal, a cable modem, a broadband telephony interface, and a multimedia terminal adapter;

and each of the originating and receiving networks comprises one of a hybrid fiber coaxial network, a PSTN network, and a broadband network.

8. In a communication network that provides a path through a cable IP network between a sending terminal of a sending network and a receiving terminal of a receiving network, an improvement comprising:

a first network manager operated by a first service provider that manages network access of the sending terminal,

a configuration module of the sending terminal that receives information defining a call setup and control protocol that controls access of said sending terminal to the sending network,

a second network manager operated by a second service provider that manages network access of the receiving terminal,

a configuration module of the receiving terminal for receiving a call setup and control protocol that controls access of said receiving terminal to the receiving network, and

a call control agent in communication with the first and second network managers to effect a transfer of access control of the sending terminal from the first network manager to the second network manager in response to a call control parameter.

9. The improvement of claim 8, wherein the call control agent effects provisioning of the configuration modules of the sending and receiving terminals according to information obtained from at least one of:

a subscriber, a database, a call type, a dialing plan, and a destination of the receiving terminal.

10. The improvement of claim 9, wherein the sending network comprises a hybrid fiber coaxial (HFC) network, the first network manager comprises a cable modem termination system (CMTS), and the sending terminal comprises a broadband modem, a multimedia terminal adapter or broadband telephony interface.

11. The improvement of claim 9, wherein said receiving terminal resides on a PSTN network, and said second network manager controls a gateway between the cable IP telephony network and the PSTN network.

12. The improvement of claim 9, wherein the first and second network managers comprise a cable modem termination systems (CMTS), the sending and receiving networks comprise hybrid fiber coaxial networks on which the sending and receiving terminals respectively reside, and the first network manager transfers control of the call to the second network manager in response to a call control parameter.

13. The improvement of claim 9, wherein the second network manager provides a video conference service by way of configuring multiple terminals needed to intercommunicate via a conferencing gateway.

14. In operation with a cable IP network that links a sending terminal of a sending network with a receiving terminal of a receiving network, an improvement comprising:

a first configuration module co-located with at least one of the sending terminal and the sending network to define a service access protocol according to call control information supplied thereto,

a first network manager in the form of cable modem termination system operated by a first service provider to bridge the sending network and the cable IP network,

a second configuration module co-located with at least one of the receiving terminal and the receiving network that is for defining a service access protocol for the transfer of information between the sending and receiving terminals,

a second network manager operated by a second service provider independent of the first service provider that is operative to bridge the receiving network and the cable IP network, and

a controller in communication with the first and second network managers to effect a transfer of call control from the first network manager to the second network manager in response to a call control parameter.

15. For use with a cable IP network that links sending and receiving networks that respectively support a sending terminal and at least one broadband receiving terminal, an improvement comprising:

a first configuration module of the sending terminal that defines a service access procedure according to control information supplied by a subscriber on a per call basis,

a first network manager operated by a first service provider to bridge the sending network and the cable IP network,

a second configuration module of the receiving terminal for defining a service access protocol that controls a conveyance of information between the sending terminal and the receiving terminal,

a second network manager operated by a second service provider to bridge the receiving network and the cable IP network, and

a controller in communication with the first network manager and the second network manager to effect a transfer of call control from the first network manager to the second network manager by enabling provisioning of the first and second configuration modules to implement service access procedures required by the hand-off.

16. In a cable IP network that links a sending CPE of a sending network and a receiving CPE of a receiving network, an improvement comprising:

a first configuration module of the sending CPE for being provisioned to define a service access protocol that controls the transfer of information,

a CMTS of an HFC network operated by a first service provider for authorizing and bridging a call between the sending CPE and the receiving CPE according to a service access protocol,

a second configuration module of the receiving CPE for being provisioned to define a service access procedure that controls an information conveyance between the sending CPE and the receiving CPE,

a network manager operated by a second service provider for effecting a link between the sending and receiving CPEs through the receiving network and the cable IP network by configuring at least one of the first and second configuration modules, and

a controller that effects a hand-off of call control from the CMTS to the network manager by effecting provisioning of the first and second configuration modules to implement a given service access procedure according to a call control parameter.

17. The improvement of claim 16, wherein the controller effects the hand-off by provisioning the first configuration module to respond to setup instructions from the network manager operated by the second service provider.

18. The improvement of claim 17, wherein the controller enables a subscriber selection of a forwarding/receiving service provider on a call-by-call basis.

19. The improvement of claim 18, wherein the controller enables video conferencing, calendar services, stock watch services, or other services.

20. The improvement of claim 16, wherein the controller enables provisioning of service access protocols according to one of selection by a subscriber, an entry in a database, a call type, a call destination, a dialing plan of the sending CPE, and a service identification associated with the sending CPE.

21. The improvement of claim 20, wherein the controller transfers call control to the network manager to handle the call according to a provisioning implemented by the first configuration module.

22. The improvement of claim 20, further including a usage server (RKS) that keeps track of call events in order to enable a settlement of network usage fees for use of the controlling network.

23. The improvement of claim 22, wherein the usage server uses internetwork signaling to obtain network usage information upon which to enable a determination of network usage fees.