Cisco 1721 - Manual (Page 36)

Chapter 2 Installation
Installing WICs
2-4
Cisco 1721 Router Hardware Installation Guide
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Installing WICs
The Cisco 1721 router supports one or two Cisco WAN interface cards (WICs).
Each card has one or two WAN ports. This section describes the general procedure
for installing a card in the Cisco 1721 router.
Note For details on specific WICs, how to connect the card to the WAN line, and
how to configure the interface with Cisco IOS software, refer to the
Cisco WAN Interface Cards Hardware Installation Guide that came with the
card(s).
Safety Information
This section lists safety warnings that you should be aware of before installing
WICs in the router.
Warning Only trained and qualified personnel should be allowed to install or replace
this equipment. (To see translated versions of this warning, refer to the
Regulatory Compliance and Safety Information for Cisco 1700 Routers
document that came with the router.)
Warning Before working on equipment that is connected to power lines, remove
jewelry (including rings, necklaces, and watches). Metal objects will heat
up when connected to power and ground and can cause serious burns or
weld the metal object to the terminals. (To see translated versions of this
warning, refer to the Regulatory Compliance and Safety Information for
Cisco 1700 Routers document that came with the router.)
Warning Do not work on the system or connect or disconnect cables during periods
of lightning activity. (To see translated versions of this warning, refer to the
Regulatory Compliance and Safety Information for Cisco 1700 Routers
document that came with the router.)