Cisco Cisco VN 2900 Network Adaptation Interface Installationsanleitung

After wiring the DC power supply, remove the tape from the circuit breaker switch handle and 
reinstate power by moving the handle of the circuit breaker to the ON position. Statement 8

WAN interface cards and voice interface cards are not interchangeable. To prevent damage to the card, 
confirm that you are installing the correct type of interface card for the slot or network module you 
intend to use.

To remove or replace an interface card from a Cisco access router, perform these steps:

Turn off electrical power to the router. Leave the power cable plugged in to channel ESD voltages to 
ground.

(For the Cisco MWR 1941-DC router) Turn off power by turning the DC power source circuit breaker 
to OFF. Tape the circuit breaker in the OFF position. To channel ESD voltages to ground, do not remove 
the wire from the ground lug.

Before performing any of the following procedures, ensure that power is removed from the DC circuit. 
To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC 
circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit 
breaker in the OFF position. Statement 7

Remove all network cables, including telephone cables, from the router.

To prevent damage to the interface card, turn off electrical power and disconnect network cables from 
the chassis before inserting an interface card into an installed network module or router slot.

To make reconnection of network interface cables easier, label the cables or prepare a network cabling 
diagram before removing network interface cables from the network module.

Using a number 1 Phillips or flat-blade screwdriver, loosen the captive mounting screws on the interface 
card faceplate.

Using the faceplate edges, pull the interface card from the router slot.

Use the thumbscrews to pull the interface card faceplate away from the router chassis until you can grip 
the faceplate with your fingers.