Signal protection and monitoring system

Details Signal protection and monitoring system Signal protection and monitoring system

1996-11-12

1999-04-20

Olms, Douglas W.

Multiplex communications

Fault recovery

Bypass an inoperative channel

370219, 370220, 370224, 39518211, H04J 314

Patent

active

058963707

ABSTRACT:
A redundancy switch (44) provides interfacing of network signals to spare network processors (46) in the event of a failure of a main network processor (42). A redundancy switch (44) allows for monitoring and diagnostic operations to be performed on network electrical signals without interrupting traffic flow on inbound and outbound paths. A redundancy switch (44) performs a loopback diagnostic by routing signals from transmitter portions of the spare network processors (46) to selected receiver portions. The redundancy switch (44) includes a receiver interface unit (90) and a transmitter interface unit (92) capable of routing inbound and outbound customer signals to and from the spare processors (46) for monitoring, diagnostic, and sparing purposes.

REFERENCES:
patent: 4435803 (1984-03-01), Das et al.
patent: 5010550 (1991-04-01), Hirata
patent: 5436890 (1995-07-01), Read et al.
patent: 5448572 (1995-09-01), Knox et al.
patent: 5574718 (1996-11-01), Eckhoff et al.
patent: 5581542 (1996-12-01), Kato et al.

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