| 摘要 |
A method and apparatus for monitoring an optical network interface. Signals containing information relating to the functional state of an optical network interface are delivered to an operation center. An alarm information transmitting component converts electric alarm information signals generated at the interior of the optical network interface into optical alarm signals. The optical alarm signals are transmitted along an optical fiber to the operation center where an alarm information receiving component derives the alarm information from the optical signal. The alarm information is transmitted to the operation center utilizing an optical alarm signal having a wave length which is different from the wave length of the optical signal used for transmitting the terminal signal. The optical network interface and the remote stations are connected by an optical fiber cable, and the subscriber's terminal and the remote stations are able to transmit a terminal signal in each direction through the optical network interface.
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