Cisco ASR 903 Hardware Installation Guide

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Front panel access to power supplies, fan tray, RSPs, and interface modules
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Online insertion and removal (OIR) of RSP, interface modules, power supplies, and fan tray
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Discrete status LEDs on power supply, interface module, RSP, and fan tray units
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Four alarm dry contact inputs (either normally open or normally closed)
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Environmental monitoring and reporting functions
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LED indicators for critical, major, and minor alarms
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Side-to-side forced air cooling
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Temperature range, see Cisco ASR 900 Series Aggregation Services Routers Data Sheet.
The figure below illustrates the Cisco ASR 903 Router chassis design.
Figure 1: Cisco ASR 903 Router Chassis Design
Interface modules1
RSP unit2
Fan tray3
Redundant power units (two DC power units are
shown)
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Power Supply Features
The Cisco ASR 903 Router support AC and DC power supplies. For more information about installing the
Cisco ASR 903 Router power supplies, see the Installing the Power Supply.
To estimate the required power supply, use the Cisco Power Calculator.
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
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Cisco ASR 903 Router Overview
Power Supply Features

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English