Cisco ASR 903 Hardware Installation Guide

IRIG-BRS-485DescriptionDirectionStandard DB-9Pin
GndGndSignal groundGND4
GndGndSignal groundGND5
IRIG-B (RS232)IRIG-B (RS232)Receive dataOutputRxD6
IRIG-B-
(RS485)
TxD-DSROutputDST7
IRIG-B+
(RS485)
TxD+CTSOutputCTS8
Twisted Pairs are: 1-2, 3-6, 4-5, 7-8.Note
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 29: 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
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
157
Troubleshooting
E and M Interface Module Pinouts

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English