Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2006-02-21
2006-02-21
Rao, Seema S. (Department: 2666)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S228000, C370S237000, C370S395210
Reexamination Certificate
active
07002906
ABSTRACT:
Method for extending the crankback procedure in an Asynchronous Transfer Mode (ATM) system composed of at least a first data network (10) comprising a plurality of switching nodes interconnected by connection lines and including end switching nodes each being connected to at least a Data Transmission equipment (DTE) and being used either as an entry border node (22) when it is connected to a source DTE (18) or an exit border node (28) when it is connected to a destination DTE (20), the network using a routing protocol of the type wherein a best route between a source DTE and a destination DTE is determined in a control point associated with the entry border node to which is connected the source DTE and wherein a set-up message is sent by the entry border node, and a second data network (12) including at least one DTE to be used as destination DTE in an exchange of data with a source DTE connected to the first data network and being interconnected with the first data network by means of at least two links (14, 16) not supporting the routing protocol. Such a method consists, when the exit border node of the first data network receives a clearing message on one link indicating that the set-up message has been rejected because the best route is blocked anywhere in the second data network, in building a crankback information element to be added to the clearing message for enabling the entry border node to find an alternate route avoiding the portion of the route which is blocked.
REFERENCES:
patent: 4345116 (1982-08-01), Ash et al.
patent: 5590118 (1996-12-01), Nederlof
patent: 5649108 (1997-07-01), Spiegel et al.
patent: 5831975 (1998-11-01), Chen et al.
patent: 5940396 (1999-08-01), Rochberger
patent: 6078586 (2000-06-01), Dugan et al.
patent: 6111881 (2000-08-01), Soncodi
patent: 6147971 (2000-11-01), Rochberger et al.
patent: 6208623 (2001-03-01), Rochberger et al.
patent: 6215765 (2001-04-01), McAllister et al.
patent: 6229787 (2001-05-01), Byrne
patent: 6272107 (2001-08-01), Rochberger et al.
patent: 6292463 (2001-09-01), Burns et al.
patent: 6483807 (2002-11-01), Manning et al.
patent: 6563798 (2003-05-01), Cheng
patent: 6600724 (2003-07-01), Cheng
Basso Claude
Damon Philippe
Cesari and McKenna LLP
Jagannathan Melanie
Rao Seema S.
LandOfFree
Method for extending the crankback procedure to any... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for extending the crankback procedure to any..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for extending the crankback procedure to any... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3657607