Cisco GS7000 Installation And Operation Manual page 47

Local Control Module
control the optional forward band redundancy switches on the forward
configuration module. It is a low-cost module that plugs into the status monitor
connectors on the optical interface board.
The local control module is equipped with a USB port to allow local control of the
optional forward band redundancy switches, the reverse band 6 dB (wink)
attenuators, the reverse band on/off switches, the optical switch, and optical
amplifiers through the PC-based GS7000 ViewPort software. All parameters
monitored by the local control module can be displayed and reviewed using
ViewPort.
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