Multiplex communications – Diagnostic testing – Fault detection
Reexamination Certificate
2007-01-30
2007-01-30
Hsu, Alpus H. (Department: 2616)
Multiplex communications
Diagnostic testing
Fault detection
C370S465000, C398S017000, C398S058000
Reexamination Certificate
active
10073756
ABSTRACT:
There is provided media converter having an integrated local information transmission function and a fault alarm signal communication system for transmitting local information using a frequency outside the communication frequency bands for data signals. In the subscriber's media converter, based on input local information, a control section sets a transmission frequency outside the communication frequency bands and outputs a signal instructing that a transmission be made. A media independent interface section receives this signal and transmits the signal in the instructed frequency. In the station media converter, a media independent interface section detects the frequency in which the local information is transmitted from the received signal. A control section then generates local information using the detected frequency and outputs it to an SNMP unit.
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Arai Katsuyuki
Nakamura Yasushi
Unami Yoshiharu
Yajima Fumio
Yamada Naoshi
Chadbourne & Parke LLP
Fujikura Ltd.
Hsu Alpus H.
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