Installation guide

Installing WAN and Voice Interface Cards in a Cisco Modular Router 2-9
WAN Interface Card Filler Panels
WAN Interface Card Filler Panels
If any interface card slot (on the network module or chassis) is unoccupied, install a filler
panel to enable proper airflow. (See Figure 2-5.)
Figure 2-5 WAN or Voice Interface Card Slot Filler Panel
When you have finished installing interface cards in the network module or chassis slots,
proceed to Chapter 3, “Connecting WAN and Voice Interface Cards to a Network.”
Installing a WAN Interface Card in a Cisco 1720 Router or
Cisco 1600 Series Router
This section describes how to install a WAN interface card in a Cisco 1720 router or
Cisco 1600 series router.
To install a WAN interface card in a Cisco 3600 series or Cisco 2600 series router, see the
“Installing a Network Module in a Cisco 3600 Series or Cisco 2600 Series Router” section
on page 2-2, or the “Before Installing a Voice Interface Card” section on page 2-5.
Note The Cisco 1720 router contains two WAN interface card slots, WIC0 and WIC1.
(See Figure 2-6.)
The router first checks slot WIC0 before it checks slot WIC1. A single card installed in
WIC1 could affect your router configuration.
If you are installing a single WAN interface card in the router, install the card in the WIC0
slot.
DO NOT INSTALL WAN INTERFACE
CARDS WITH POWER APPLIED
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