Multiplex communications – Fault recovery – Bypass an inoperative station
Patent
1997-08-08
2000-04-25
Nguyen, Chau
Multiplex communications
Fault recovery
Bypass an inoperative station
370227, 370242, H04J 312
Patent
active
060552263
ABSTRACT:
To signal a failure in a mixed PDH/SDH network in order to enable this network to provide a service such as a protection mechanism, an alarm indication has to be provided to an SDH node in the event of that failure. A PDH node linked to that SDH node creates an alarm data stream and provides this alarm data stream to the SDH node in the event of any of:
an internal PDH node failure; and
a link failure between the previous node and the PDH node; and
upon reception of such an upstream created alarm data stream;
The SDH node creates the alarm indication in the event of any of:
a link failure between the PDH node and the SDH node; and
upon reception of such an alarm data stream coming from the PDH node.
REFERENCES:
patent: 4961180 (1990-10-01), Schwarz et al.
patent: 5193086 (1993-03-01), Satomi et al.
patent: 5233600 (1993-08-01), Pekarske
patent: 5265096 (1993-11-01), Parruck
patent: 5367395 (1994-11-01), Yajima et al.
patent: 5491686 (1996-02-01), Sato
patent: 5712845 (1998-01-01), Peltomaki
patent: 5757774 (1998-05-01), Oka
patent: 5799001 (1998-08-01), Lee et al.
ITU-T Recommendation G.796, Characteristics of a 64 kbit/s Cross Connect Equipment with 2048 kbit/s Access Ports (Sep. 1992), pp 6-7.
ITU-T Recommendation G.783 (Jan. 1994), Characteristics of Synchronous Digital Hierarchy (SDH) Equipment Functions Blocks, p. 47.
ITU-T Recommendation G.841 (Jul. 1995), "Types and Characteristics of SDH Network Protection Architectures", pp. 1-6.
"1654 SL and 1664 SL 622 Mbit/s and 2.488 Gbit/s Synchronous Transmission Systems", F. Cadorel et al, Commutation & Transmission vol. 14 (1992), No. 1, Paris, pp. 77-86.
"Transmission Testing: More Capability Without Added Complexity", A. Rougier, Telecommunications, vol. 3, Aug. 1995, pp. 25-28.
Alcatel
Nguyen Chau
Nguyen Phuongchau Ba
LandOfFree
Method to signal a failure in a mixed PDH/SDH network in order t 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 to signal a failure in a mixed PDH/SDH network in order t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to signal a failure in a mixed PDH/SDH network in order t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-999238