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3.2.9 Auto Laser Shutdown
Automatic Laser Shutdown (ALS) is a technique used to automatically shut down the output power of the transmitter in case of fiber break,
according to ITU-T G.664. If a fiber is cut, the receiver will detect a Loss Of Signal (LOS). The ALS agent will turn off the transmitter. The receiver
at the far end will then detect an LOS and its ALS agent will turn off the transmitter. In this way the entire fiber will go dark. The protocol will also
occasionally turn on the laser briefly, monitoring a link for recovery. This on/off period is configurable.
Mode: Select to enable or disable ALS.
Period ON: Set the period, in seconds (1.0~5.0), that turns the laser on to attempt a link recovery. Default is 1 second.
Period OFF: Sets how long, in seconds (1.0~5.0), the laser remains off after a failed recovery attempt. Default is 3 seconds.
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