System and method for providing fault tolerant IP services
First Claim
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1. A method for providing fault tolerant IP services, comprising:
- establishing a first communication session between an originating telephony device and an application server, using a primary call manager, wherein the application server is operable to route an incoming call from the originating telephony device to a destination telephony device;
detecting a failure of the primary call manager before the incoming call is routed to the destination telephony device;
maintaining a media communication link between the originating telephony device and the application server;
establishing a second communication session between the application server and the destination telephony device using a backup call manager, the application server initiating the second communication session by communicating with the backup call manager; and
coupling at least a portion of the first communication session and at least a portion of the second communication session at the application server to establish two-way communication between the originating telephony device and the destination telephony device.
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Abstract
A system and method for providing fault tolerant IP services includes establishing a first communication session between an originating telephony device and an application server, through a primary call manager. Failure of the primary call manager may be detected. A second communication session between the application server and a destination telephony device may be established via a back-up call manager. The first communication and the second communication session may be coupled at the application server to establish two-way communication between the originating telephony device and the destination telephony device.
22 Citations
18 Claims
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1. A method for providing fault tolerant IP services, comprising:
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establishing a first communication session between an originating telephony device and an application server, using a primary call manager, wherein the application server is operable to route an incoming call from the originating telephony device to a destination telephony device; detecting a failure of the primary call manager before the incoming call is routed to the destination telephony device; maintaining a media communication link between the originating telephony device and the application server; establishing a second communication session between the application server and the destination telephony device using a backup call manager, the application server initiating the second communication session by communicating with the backup call manager; and coupling at least a portion of the first communication session and at least a portion of the second communication session at the application server to establish two-way communication between the originating telephony device and the destination telephony device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer readable medium encoded with a computer program for providing fault tolerant IP services, the computer program when executed by a processor being operable to perform the following steps:
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establish a first communication session between an originating telephony device and an application server, using a primary call manager, wherein the application server is operable to route an incoming call from the originating telephony device to a destination telephony device; detect a failure of the primary call manager before the incoming call is routed to the destination telephony device; maintain a media communication link between the originating telephony device and the application server; establish a second communication session between the application server and the destination telephony device using a back-up call manager, the application server initiating the second communication session by communicating with the back-up call manager; and couple at least a portion of the first communication session and at least a portion of the second communication session at the application server to establish two-way communication between the originating telephony device and the destination telephony device. - View Dependent Claims (16, 17, 18)
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Specification