6-Port E And M Interface Module; 4-Port C37.94 Interface Module - Cisco ASR 902U Hardware Installation Manual

Overview
Standard
IEC 60870-2-2:1996
IEC 61000-6-5:2001
For more information about installing the module, see the Interface Module Installation.
For information on LEDs, see 14-Port Serial Interface Module LEDs.
For information on cables and pinouts see, Connecting Serial Cables and Serial Interface Modules Pinouts.

6-Port E and M Interface Module

The Cisco A900-IMA6EM is a 6-port Ear and Mouth (E&M) interface module. The interface module provides
the router with connectivity to tele-protection equipments. The front panel of the module consists of:
• six port RJ45 connectors
• two LED that display Power and Status
• one LED per RJ45 port
Figure 24: E and M Interface Module
For more information about installing the module, see the Interface Module Installation section.

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 850 nm. The
physical interfaces use 2.5 mm ST connectors.
The front panel of the module consists of:
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
Definition
IEC standard for substation environmental conditions
IEC standard defining immunity for power station
and substation environments
Interface Modules
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