Transport interface for performing protection switching of telec

Details Transport interface for performing protection switching of telec Transport interface for performing protection switching of telec

1996-03-29

1999-12-28

Olms, Douglas W.

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

370250, 370359, 370360, 370476, 370907, H04L 1224

Patent

active

060090758

ABSTRACT:
A transport interface (10) provides add drop multiplex functionality and termination requirements for the transportation of network traffic. The transport interface (10) includes high speed units (12), broadband interfaces (16), and SONET formatters (18). Each high speed unit (12), broadband interface (16), and SONET formatter has redundant protection pairs (A and B). The high speed units (12), broadband interfaces (16), and SONET formatters (18) communicate with each other by in-band datalinks (40). The redundant protection pairs (A and B) communicate with one another by protection pair datalinks (42). The in-band datalinks (40) and the protection pair datalinks (42) provide an effective means for performing protection switching within the transport interface (10) in the event of component failure. The in-band datalinks (40) are generated out of available or consumed bytes within either a section overhead (32) or a line overhead (34) of SONET OC-N frame (30). The protection pair datalinks (42) provide communication capability over a common control communications interface. The in-band datalinks (40) and the protection pair data links (42) work together to provide a smooth transition from one component to another in the event of a protection switch.

REFERENCES:
patent: 5265096 (1993-11-01), Parruck
patent: 5307353 (1994-04-01), Yamashita et al.
patent: 5343464 (1994-08-01), Iino et al.
patent: 5365510 (1994-11-01), Nicholson et al.
patent: 5508997 (1996-04-01), Katou
patent: 5568300 (1996-10-01), Ishibashi
patent: 5574718 (1996-11-01), Eckhoff et al.
Search Report, PCT/US/97/05286, Jul. 25, 1997.

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