Cisco NCS 1001 - Protection Switching Module

Optical PortsController
• OSC-RX
• OSC-TX
Ots 0/slot/0/2
COM-CHECKOts 0/slot/0/3
Protection Switching Module
The protection switching module (NCS1K-PSM) provides the following functionality.
• In TX section:
• Splits input optical channels to both working and protection lines.
• Forces the switch in the remote site by opening one of the two line paths (by putting the related
VOA in AVS).
• In RX section:
• Selects the signals from working or protection line. Each line is monitored through a PD.
• Balances the two line losses by changing the VOA attenuation value at the same time of the switch
change of state.
Figure 9: PSM Front View
Protected path input and output port [P - RX, TX]1
Working path input and output port [W - RX, TX]2
COM input and output port [COM - RX, TX]3
Status LED4
The following table describes the mapping of controllers and optical ports for the protection switching module.
Optical PortsController
COM-TXOts 0/slot/0/0
Hardware Installation Guide for Cisco NCS 1001
8
Cisco NCS 1001 Overview
Protection Switching Module