Automated path restoration for packet telephony

Details Automated path restoration for packet telephony Automated path restoration for packet telephony

2003-05-16

2008-11-04

Lee, Andrew (Department: 2616)

Multiplex communications

Fault recovery

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

C370S352000, C370S392000

Reexamination Certificate

active

07447150

ABSTRACT:
The present invention provides an automatic restoration architecture for packet telephony applications. Each communication endpoint has access to a pair of edge routers, which interface with a core network through which communication paths are established. The communication paths effectively provide for the delivery of packets between a first edge router for a first endpoint and a first edge router for a second endpoint. When a communication session is established, a communication path is set up between the first edge router for the first endpoint and the first edge router for the second endpoint. Upon detecting a failure along the communication path, an attempt to restore the communication path between the first edge routers may be provided. If such restoration is not effective, an alternate communication path may be established with a second edge router for either of the first or second endpoints.

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