System and method for providing fault tolerant IP services

Details System and method for providing fault tolerant IP services System and method for providing fault tolerant IP services

2002-08-20

2009-10-13

Moore, Ian N (Department: 2416)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S401000, C370S352000

Reexamination Certificate

active

07602704

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.

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Mon-Yen Luo and Chu-Sing Yang, “Enabling fault resilience for web services”, Department of Computer Science and Engineering, National Sun Yat-Sen University, Taiwan, published by Computer Communications 25 (2002) pp. 198-209.
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