General Site Requirements; Power Supply Considerations; Site Environment; Wireless Lan Considerations - Cisco CISCO1841 - 1841 Integrated Services Router Hardware Installation Manual

General Site Requirements

General Site Requirements
This section describes the requirements your site must meet for safe installation and operation of your
router. Ensure that the site is properly prepared before you begin the installation. If you experience
shutdowns or unusually high error rates with your existing equipment, the information in this section
can help you isolate the cause of failures and prevent future problems.

Power Supply Considerations

Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise).
Install a power conditioner if necessary.
Warning The device is designed for connection to TN and IT power systems. Statement 1007
The AC power supply includes a 6-foot (1.8-meter) electrical power cord. (A label near the power inlet
indicates the correct voltage, frequency [AC-powered systems only], current draw, and power
dissipation for the unit.)
Table 2-1
Table 2-1
Router
Without inline power support
With inline power support

Site Environment

The Cisco 1800 series fixed-configuration router can be placed on a desktop, installed in a rack, or
mounted on a wall or other vertical surface. The location of your router and the layout of your equipment
rack or wiring room are extremely important considerations for proper operation. Having equipment
placed too close together, inadequate ventilation, and inaccessible panels can cause malfunctions and
shutdowns, and can make maintenance difficult. Plan for access to both the front panel and the back
panel of the router. When facing the router front-bezel, airflow is from left to right,
When you plan your site layout and equipment locations, keep in mind the precautions listed in the
Configuration" section on page 2-5
environmentally caused shutdowns. If you are experiencing shutdowns or an unusually high number of
errors with your existing equipment, these precautions may help you isolate the cause of the failures and
prevent future problems.

Wireless LAN Considerations

The type of antenna used with your wireless router and its location greatly impact the quality of wireless
connections to the router. Cisco 1800 series fixed-configuration routers are compatible with three
different antenna types—swivel-mount dipole antennas that mounts on the back panel of the router, a
wall-mount antenna, and a ceiling-mount antenna.
Cisco 1800 Series Integrated Services Routers (Fixed) Hardware Installation Guide
2-4
lists power requirements for the Cisco 1800 series fixed-configuration routers.
Power Requirements for Cisco 1800 Series Fixed-Configuration Routers
Input Power
100–120V/200–240V, 1.2A/0.6A
100–120V/200–240V, 1.2A/0.6A
to help prevent equipment failures and reduce the possibility of
Chapter 2 Preinstallation Requirements
Input Voltage
Tolerance Limits
90 to 264 VAC
90 to 264 VAC
OL-6425-03
"Site