ATM device, subscriber system, communication system and...

Details ATM device, subscriber system, communication system and... ATM device, subscriber system, communication system and...

2005-05-24

2005-05-24

Pham, Chi (Department: 2667)

Multiplex communications

Fault recovery

Bypass an inoperative channel

C370S395210

Reexamination Certificate

active

06898178

ABSTRACT:
A technology is disclosed to enable VP/VC on an ATM network to be backed up by using an ISDN line without presetting any detailed information regarding a backup VP/VC to be set on the ISDN line. An ATM switch A30is provided to establish the ISDN line connecting with an ATM multiplexer A20when any failure occurs in an ATM transmission path contacting with the ATM multiplexer A20. Negotiation is carried out with ATM multiplexer A30by using the established ISDN line so as to decide a channel characteristic of a backup VP/VC to be set on the ISDN line. Then, the ATM switch A30and the ATM multiplexer A20communicate with each other by using the backup VP/VC having the decided channel characteristic on the ISDN line.

REFERENCES:
patent: 6167025 (2000-12-01), Hsing et al.
patent: 6618400 (2003-09-01), Okamura

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