Message signalling in a synchronous transmission apparatus

Details Message signalling in a synchronous transmission apparatus Message signalling in a synchronous transmission apparatus

2005-03-22

2005-03-22

Ton, Dang (Department: 2666)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S463000, C370S465000, C370S514000, C370S535000, C370S541000

Reexamination Certificate

active

06870829

ABSTRACT:
The invention relates to message signalling in a synchronous transmission apparatus using redundant pointer bits as a signalling channel within the apparatus. The preferred embodiment uses one or more of the new data flag (NDF) pointer bits as a signalling channel. The invention has particular, but not exclusive, application in the field of performance monitoring in a path protected telecommunications network, where the pointer bit signalling channel is used to communicate between data ports which transmission path is selected.

REFERENCES:
patent: 5621720 (1997-04-01), Bronte et al.
patent: 5717693 (1998-02-01), Baydar et al.
patent: 5790557 (1998-08-01), Lee et al.
patent: 5822299 (1998-10-01), Goodman
patent: 6094737 (2000-07-01), Fukasawa
patent: 6496518 (2002-12-01), Taniguchi

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