Self-healing ring switch and method of controlling the same

Details Self-healing ring switch and method of controlling the same Self-healing ring switch and method of controlling the same

1996-10-31

1998-09-29

Hsu, Alpus H.

Multiplex communications

Fault recovery

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

370223, 370372, 370380, 359117, H04Q 1104

Patent

active

058154892

ABSTRACT:
A self-healing ring switch transmission system uses space division switches disposed upstream and downstream of an add drop switch in order to determine a correspondence with a plurality of ring-switch modes by merely changing the software. This is accomplished by having one output highway of the add drop switch and one output highway of a space division switch connected with an input stage of a selector for selecting one time slot of the two output highways.

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Bellcore, Bell Communications Research, Technical Advisory TA-NWT-001230, Issue 2, Apr. 1992: Sonet Bidirectional Line Switched Ring Equipment Generic Criteria.
Bellcore, Bell Communications Research Research, Technical Reference TR-TSY-000496 issue 2, Sep. 1989, Supplement 1, Sep. 1991: Sonet Add-Drop Multiplex Equipment (Sonet ADM) Generic Criteria.
American Nattional Standards Institute, Inc., American National Standard for Telecommunications, draft standard Sep. 15, 1992: Synchronous Optical Network (Sonet): Automatic Protection Switching.

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