Cisco ASR 903 Installation Guide

UnshieldedShielded
7Not Used7
8Not Used8
The table below summarizes the RJ45 port pinout.
Table 36: RJ45 Port Pinout
DescriptionDirectionSignal NamePin
1PPS RS422 signalOutput or Input1PPS_P1
1PPS RS422 signalOutput or Input1PPS_N2
Do NOT connectOutputRESERVED3
GND4
Time of Day characterGND5
Do NOT connectInputRESERVED6
Time of Day characterOutput or InputTOD_P7
Time of Day characterOutput or InputTOD_N8
Serial Cable Pinouts
The following sections summarize the pinouts for 14-port serial interface module when used with the cable
types specified in Connecting Serial Cables.
DB-9 Connector Pinouts
The table below summarizes the pinouts for each serial interface type when using a DB-9 connector.
Table 37: DB-9 Pin-outs
IRIG-BRS-485DescriptionDirectionStandard
DB-9
Pin
NCNCUnusedOutputNC1
NCNCReceiveInputRxD2
IRIG-B (RS232)NCTransmitOutputTxD3
IRIG-B-
(RS485)
TxD-DTROutputDTR4
GNDGNDGND—GND5
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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Troubleshooting
Serial Cable Pinouts

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English