Cisco ASR 903 Hardware Installation Guide

For more information, see Connecting Serial Cables and Serial Cable Pinouts.
4-Port C37.94 Interface Module
The Cisco (A900-IMA4C3794) is a 4-port interface module that provides IEEE C37.94-2002 compliant Nx64
kbps optical interface ports to the router. The interfaces support 50/62.5 multimode fiber at 850nm. The
physical interfaces use 2.5mm ST connectors.
The front panel of the module consists of four ports of IEEE C37.94 interfaces.
Figure 35: C37.94 Interface Module
Figure 36: C37.94 Interface Module Front Panel
For information on LEDs, see 4-Port C37.94 Interface Module LEDs.
For more information about installing the module, see Interface Module Installation.
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
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Cisco ASR 903 Router Overview
Interface Modules

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English