Cisco ASR 903, Installation Manual, Page: 49 / 200

Supported Standards
The 14-port serial interface module supports the following standards:
Definition Standard
IEEE Standard for Environmental and Testing Requirements for
Communications Networking Devices in Electric Power Substations IEEE 1613 2009
IEC standard specifying general requirements for substation automation
systems (SAS) communications and related system requirements IEC 61850-3
IEC standard for substation environmental conditions IEC 60870-2-1:1995
IEC standard for substation environmental conditions IEC 60870-2-2:1996
IEC standard defining immunity for power station and substation
environments IEC 61000-6-5:2001
The serial interface module supports several cable types. For more information, see Connecting Serial Cables .
6-Port E and M Interface Module
The Cisco (A900-IMA6EM) is a 6-port Ear and Mouth (E&M) interface module for the Cisco ASR 903 router.
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 39: E and M Interface Module
For information on LEDs, see E and M Interface Module LEDs .
For more information about installing the module, see the Interface Module Installation .
For more information, see Connecting Serial Cables and Serial Cable Pinouts .
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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Overview
Supported Standards