Path switching ring control apparatus in a synchronous (SDH) net

Details Path switching ring control apparatus in a synchronous (SDH) net Path switching ring control apparatus in a synchronous (SDH) net

1997-01-08

2000-02-01

Vu, Huy D.

Multiplex communications

Fault recovery

Bypass an inoperative station

371 206, H04J 116, G01R 3128

Patent

active

060211121

ABSTRACT:
A path switching ring control apparatus is provided for use in a synchronous (SDH) network, and in particular for the purpose of repairing a fault which occurs in an asynchronous (PDH) subnetwork contained therein, this apparatus having a transmission alarm detection section which monitors the input PDH signal and generates a transmission alarm signal when a degradation of the quality thereof is detected, a path overhead generation section which generates the path overhead information of the transmission alarm signal from the transmission alarm detection section, and a path overhead insertion section which inserts the overhead information generated by the path overhead generation section into an SDH signal after the mapping thereof.

REFERENCES:
patent: 5491696 (1996-02-01), Nishimura
patent: 5550805 (1996-08-01), Takatori et al.
patent: 5570344 (1996-10-01), Fujii
patent: 5701293 (1997-12-01), Fujii
patent: 5737310 (1998-04-01), Goto

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