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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-04
Chapter 2 Preparing for Installation
Site Planning
• Consideration has been given to the console port wiring and limitations of the cabling involved,
according to TIA/EIA-232F.
• The Cisco ASR 903 Router Ethernet cabling distances are within limitations.
• The equipment rack in which you plan to install the Cisco ASR 903 Router complies with
requirements.
• In selecting the location of the rack, careful consideration has been given to safety, ease of
maintenance, and proper airflow.
Site Selection Guidelines
The Cisco ASR 903 Router requires specific environmental operating conditions. Temperature,
humidity, altitude, and vibration can affect the performance and reliability of the router. The following
sections provide specific information to help you plan for the proper operating environment.
The Cisco ASR 903 Router is designed to meet the industry EMC, safety, and environmental standards
described in the Regulatory, Safety, and Compliance Information for the Cisco ASR 903 Router.
Environmental Requirements
Environmental monitoring in the Cisco ASR 903 Router protects the system and components from
damage caused by excessive voltage and temperature conditions. To ensure normal operation and avoid
unnecessary maintenance, plan and prepare your site configuration before installation. After installation,
make sure that the site maintains the environmental characteristics described in “System Specifications”
section on page 2.
Physical Characteristics
Be familiar with the physical characteristics of the Cisco ASR 903 Router to assist you in placing the
system in the proper location. For more information, see the “System Specifications” section on page 2.