Failure protection for packet telephony

Details Failure protection for packet telephony Failure protection for packet telephony

2007-10-23

2007-10-23

Pezzlo, John (Department: 2616)

Multiplex communications

Fault recovery

C370S386000, C370S401000, C709S221000, C709S231000

Reexamination Certificate

active

10194114

ABSTRACT:
The present invention provides a fail-over architecture for packet telephony applications. A media gateway is configured to have at least two interfaces, each of which is associated with a communication path. The communication paths are isolated from one another as much as possible, and may each be used to facilitate the transfer of packets for a communication session. The fail-over process implemented by the gateway includes receiving packets from a remote gateway, and when an interruption in incoming packets occurs, switching to another communication path for both transmission and reception of packets to facilitate the communication session with the remote gateway. As such, an interruption in packets due to a failure in a primary communication path results in both gateways automatically switching to a redundant communication path to support the communication session.

REFERENCES:
patent: 6195680 (2001-02-01), Goldszmidt et al.
patent: 6542499 (2003-04-01), Murphy et al.
patent: 2006/0112400 (2006-05-01), Zhang et al.

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