Installation guide

Installing WAN and Voice Interface Cards in a Cisco Modular Router 2-7
Installing a WAN or Voice Interface Card in a Network Module or Chassis Slot
The following warning applies to routers that use a DC power supply.
Note If you are installing a single WAN interface card in a Cisco 2600 series
router, use slot W0 first. (See Figure 2-3.)
The Cisco 2600 series router first checks slot W0 before it checks slot W1. If you
fill slot W1 while leaving slot W0 vacant, your router configuration could be
affected.
Step 2 Using either a number 2 Phillips screwdriver or a small flat-blade screwdriver to
remove the blank filler panel from the network module slot or chassis card slot
where you plan to install the card. Save the filler panel for future use.
Note The voice network module slots are numbered V0, on the right, and V1,
on the left.
Step 3 Align the card with the guides in the two-slot network module or WAN interface
card slot and slide it gently into the slot. (Figure 2-4 shows a 1-port serial WAN
interface card.)
Step 4 Push the card into place until you feel its edge connector mate securely with the
connector in the two-slot network module or WAN interface card slot.
Step 5 Fasten the card’s captive mounting screws into the holes in the network module
faceplate or WAN interface card slot, using the Phillips or flat-blade screwdriver.
Step 6 If the router was previously running, reinstall the network interface cables and
turn ON power to the router.
Warning 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.