CHAPTER 1
Cisco ASR 903 Router Overview
The Cisco ASR 903 Router is a fully-featured aggregation platform designed for the cost-effective delivery
of converged mobile and business services. With shallow depth, low power consumption, and an extended
temperature range, this compact 3-rack-unit (RU) router provides high service scale, full redundancy, and
flexible hardware configuration.
The Cisco ASR 903 Router expands the Cisco service provider product portfolio by providing a rich and
scalable feature set of Layer 2 VPN (L2VPN) and Layer 3 VPN (L3VPN) services in a compact package.
It also supports a variety of software features, including Carrier Ethernet features, Timing over Packet, and
pseudowire.
The Cisco ASR 903 Router is positioned as a pre-aggregation router in IP RAN (GSM, UMTS, iMAX,
CDMA, and LTE) networks or an aggregation router in Carrier Ethernet networks.
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Cisco ASR 903 Router Features, page 1
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Interface Numbering, page 49
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Regulatory Compliance, page 51
Cisco ASR 903 Router Features
The Cisco ASR 903 Router has the following hardware features:
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3-RU modular chassis designed for installation in a 300 mm European Telecommunications Standards
Institute (ETSI) cabinet
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Dedicated slots in the chassis that support the following:
◦
Up to six interface modules
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Up to two Route Switch Processors (RSP)
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Up to two AC or DC power supply units
◦
One fan tray
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Network frequency, phase, and time inputs and outputs for network interfaces (SyncE and TDM), BITS,
1 PPS or 10 MHz and Timing over Packet (IEEE 1588-2008)
•
Adjustable front and rear rail mounting locations
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
1
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