Gateway apparatus and method of protection switching thereof

Details Gateway apparatus and method of protection switching thereof Gateway apparatus and method of protection switching thereof

2006-10-04

2009-12-08

Abelson, Ronald (Department: 2419)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S353000, C370S355000, C370S356000

Reexamination Certificate

active

07630387

ABSTRACT:
A gateway apparatus comprising signal converter has service line concentrating unit and protection line concentrating unit, packet switch has a plurality of IP converters each line-concentrated to service line concentrating unit and protection line concentrating unit, first monitor monitoring responses from the plurality of IP converters through service line concentrating unit and protection line concentrating unit, second monitor monitoring responses from the plurality of IP converters through paths deferring from those of first monitor, failure determiner determining presence or absence of failures in at least any one of service line concentrating unit, protection line concentrating unit and the plurality of IP converters on basis of presences or absences of responses monitored by first and second monitors, respectively, and switcher switching protection line concentrating unit to be in effect to operate it as new service system when failure determiner has determined that any failure is present in service line concentrating unit.

REFERENCES:
patent: 6389005 (2002-05-01), Cruickshank
patent: 6542599 (2003-04-01), Miyagawa
patent: 2000-174748 (2000-06-01), None
patent: 2007-019831 (2007-01-01), None

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