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Cisco Line Module - Expansion module - fiber optic - refurbished
The Line Module (LM) enables monitoring of input and output signals, with 10 percent of the light directed to the monitor outputs at the top of the front panel. The LM also converts from internal MU connectors to SC or FC line connectors. There is typically one LM on the A-side of the ONS 15252 Multichannel Unit (MCU) and another on the B-side (for protected systems).
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