Required Tools And Equipment; Wan Interface Card Slot Assignments; Termination Jumpers - Cisco WIC36-1B-S Configuration Note

frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage
and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground
yourself by touching the metal part of the chassis.
Caution
between 1 and 10 megohms (Mohm).

Required Tools and Equipment

You need the following tools and equipment to install a WAN interface card in a Cisco 3600 series
router:
•
WAN interface card
•
2-slot network module
•
Number 1 Phillips screwdriver or small flat-blade screwdriver
•
ESD-preventive wrist strap

WAN Interface Card Slot Assignments

A 2-slot network module for Cisco 3600 series routers has two slots for installing WAN interface
cards. These slots are numbered W0, on the right, and W1, on the left. Some WAN interface cards
are keyed to be installed in slot W1 only. Cards that do not have a key fit into either slot.
Both BRI WAN interface cards have a key and fit into slot W1 only.

Termination Jumpers

The BRI S/T WAN interface card includes two termination jumpers, labeled J1 and J2. (See
Figure 3.) Before installing this card, make sure that these jumpers are set correctly for your
installation.
The jumpers are factory-configured in the B position (100 ohms termination). Keep the jumpers in
this position to use the BRI S/T WAN interface card in a point-to-point connection or as the last
device on the line of a passive-bus connection. Set the termination jumpers to the A position to use
the BRI S/T WAN interface card in a passive-bus connection where it is not the last device on the
line.
For safety, periodically check the resistance value of the antistatic strap, which should be
Required Tools and Equipment
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