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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
Chapter 2 Preparing for Installation
Site Requirement Guidelines
• Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
• Never touch uninsulated telephone wires or terminals unless the telephone
line has been disconnected at the network interface.
• Use caution when installing or modifying telephone lines.
Site Requirement Guidelines
This section provides the site requirement guidelines that you must consider
before installing Cisco
12006 and Cisco 12406 Routers:
• Environmental Guidelines, page 2-9
• Rack-Mounting Guidelines, page 2-10
• Power Connection Guidelines, page 2-14
• Site Wiring, page 2-20
Environmental Guidelines
This section offers guidelines for operating Cisco 12006 and Cisco 12406
Routers in various environments. The following environmental considerations are
discussed:
• Airflow
• Temperature and humidity
Airflow
The air circulation system for Cisco 12006 and Cisco 12406 Routers consists of
one blower module mounted at the rear of the chassis. The blower module
maintains acceptable operating temperatures for the internal components by
drawing cooling air in through replaceable air filters located on the right side of
the chassis. Air circulates through the card cage and exhausts at the rear of the
chassis.
Observe the following guidelines when selecting a site in which to install
Cisco
12006 and Cisco 12406 Routers: