Cisco ASR 903 Installation Guide

The X.21, V.35, RS-485, EIA-449, EIA-530, and IRIG-B standards are not currently supported by software.
Note
E and M Interface Module Pinouts
Table 39: RJ45 Front End Pinout
Usage532Type 1DescriptionSignalPin
—SBSB—48V signaling
battery
SIG_BAT_N48V1
MSignaling inputM_SIG_IN2
Not used in 2-wire
mode
RRing, audio inputRING_AUDIO_IN3
4-wire mode: Output
2-wire mode: InOut
R1Ring, audio
input/ouput or
output
RING_AUDIO_IN_OUT4
T1Tip, audio
input/output or
output
TIP_AUDIO_IN_OUT5
Not used in 2-wire
mode
TTip, audio inputTIP_AUDIO_IN6
ESignaling outputE_SIG_OUT7
—SG
SG—Signaling ground
return
SIG_GND_RETURN8
Management Ethernet Port Pinout
A single management copper ENET port supporting 10/100/1000Base-T operation exists on each RSP. There
is no direct access to the CPU of the other RSP. It uses a standard RJ45 jack.
This is not a data plane port.
Note
The table below summarizes the Management Ethernet port pinout.
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
174
Troubleshooting
E and M Interface Module Pinouts

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English