Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Patent
1997-02-18
1999-11-09
Hsu, Alpus H.
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
370231, 370236, 370244, 370248, H04J 314, H04L 1226
Patent
active
059827432
ABSTRACT:
The present invention is a transmission system with a performance monitor function. The system has an end office, an opposite office located opposite the end office and an intermediate office located between the end office and the opposite office. In the transmission system each of the end office, the opposite office and the intermediate office has a transmitter/receiver for transmitting/receiving information and a performance monitor for monitoring performance of a transmission line. The intermediate office has a switch for switching lines and a bypass for bypassing the switch and for transmitting/receiving a signal to/from an adjacent office while the performance monitor is operating.
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Hsu Alpus H.
NEC Corporation
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