Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-11-29
2005-11-29
Patel, Ajit (Department: 2664)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S356000, C370S242000, C370S250000, C370S254000
Reexamination Certificate
active
06970451
ABSTRACT:
A system and method of routing communication signals is provided. A first technique uses a packet switched device that operates using Internet Protocol, the packet switched device determines one or more commands based on a routing request to establish, maintain, restore or breakdown one or more communication paths and a circuit switched device that provides physical switching between a plurality of ports based on the one or more commands from the packet switched device. A second technique for expediting error condition information is also provided. As various error conditions are recognized, information relating to the error conditions is provided directly to the packet switched device to enable the packet switched device to restore communications with minimal delay.
REFERENCES:
patent: 5905838 (1999-05-01), Judy
patent: 6061334 (2000-05-01), Berlovitch et al.
patent: 6160651 (2000-12-01), Chang
patent: 6282193 (2001-08-01), Hluchyj et al.
patent: 6292464 (2001-09-01), Elahmadi
patent: 6295146 (2001-09-01), Nathan
patent: 6353609 (2002-03-01), Ethridge et al.
patent: 6477166 (2002-11-01), Sanzi
patent: 6483833 (2002-11-01), Jagannath
patent: 6522629 (2003-02-01), Anderson, Sr.
patent: 6639895 (2003-10-01), Helles
patent: 6665273 (2003-12-01), Goguen
patent: 6724781 (2004-04-01), Dupont
patent: 6798771 (2004-09-01), Low et al.
patent: 2002/0018264 (2002-02-01), Kodialam
patent: 2002/0018269 (2002-02-01), Chaudhuri
patent: 2002/0030864 (2002-03-01), Chaudhuri
patent: 2002/0041413 (2002-04-01), Wang
Cao et al. (USPUB 2002/0181485) discloses apparatus for IP flow ring protection swtiching.
“Integration of IP over Optical Networks: Networking and Management”, Deliverable 1, IP over WDM, Transport and Routing, Oct. 1999, entire publication, EURESCOM Participants in Project P918-GI.
Greenberg Albert Gordon
Hjalmtysson Gisli
Yates Jennifer
AT&T Corp.
Michael Haynes PLC
Patel Ajit
LandOfFree
Smart routers-simple optics: network architecture for IP... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Smart routers-simple optics: network architecture for IP..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smart routers-simple optics: network architecture for IP... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3461176