Cisco ASR 903 Troubleshooting

Table 5: RJ48 IPPS/ToD Port Pinout
DescriptionDirectionSignal NamePin
V.11 Cable CorporationOutput or InputRESERVED1
Output or InputRESERVED2
1PPS RS422 signalOutput1PPS_N3
GND4
5
1PPS RS422 signalInput1PPS_P6
Time of Day R422 output
or input signal
Output or InputTOD_N7
Time of Day R422 output
or input signal
Output or InputTOD_P8
Alarm Port Pinout
The table below summarizes the external alarm input pinout.
Table 6: External Alarm Input Pinout
DescriptionSignal NamePin
Alarm input 0ALARM0_IN1
Alarm input 1ALARM1_IN2
No connect3
Alarm input 2ALARM2_IN4
Alarm input 3ALARM3_IN5
No connect6
No connect7
Alarm commonCOMMON8
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
4
Troubleshooting
Alarm Port Pinout

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English