Alarm Port Pinout - Cisco ASR 903 Troubleshooting Manual

Alarm Port Pinout

Table 5: RJ48 IPPS/ToD Port Pinout
Pin
1
2
3
4
5
6
7
8
Alarm Port Pinout
The table below summarizes the external alarm input pinout.
Table 6: External Alarm Input Pinout
Pin
1
2
3
4
5
6
7
8
Cisco ASR 903 Aggregation Services Router Hardware Installation Guide
4
Signal Name Direction
RESERVED Output or Input
RESERVED Output or Input
1PPS_N Output
GND
1PPS_P Input
TOD_N Output or Input
TOD_P Output or Input
Signal Name
ALARM0_IN
ALARM1_IN
ALARM2_IN
ALARM3_IN
COMMON
Troubleshooting
Description
V.11 Cable Corporation
1PPS RS422 signal
1PPS RS422 signal
Time of Day R422 output
or input signal
Time of Day R422 output
or input signal
Description
Alarm input 0
Alarm input 1
No connect
Alarm input 2
Alarm input 3
No connect
No connect
Alarm common