Protection switching system with single line control

Details Protection switching system with single line control Protection switching system with single line control

1995-03-31

1996-10-29

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

395181, H04L 122

Patent

active

055703453

ABSTRACT:
The invention performs very fast switching between a main module and a standby module in the event of module failure. A single control line has different logic level signals applied thereto in the event of a main module failure and a standby module failure, with the signals on the control line being utilized to efficiently switch the on-line status of the modules to a desired state.

REFERENCES:
patent: 4228535 (1980-10-01), Workman et al.
patent: 5072440 (1991-12-01), Isono et al.
patent: 5408462 (1995-04-01), Opoczynski

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