Time-of-Day Port Pinouts
Time-of-Day Port Pinouts
The table below summarizes the ToD/1-PPS port pinouts.
Table 15: RJ-45 1PPS/ToD Port Pinouts
Pin
1
2
3
4
5
6
7
8
Alarm Port Pinouts
The table below summarizes the external alarm input pinouts.
Table 16: External Alarm Input Pinouts
Pin
1
2
3
4
5
6
7
Cisco ASR-920-12SZ-IM Aggregation Services Router Hardware Installation Guide
100
Signal Name
Direction
V.11 Loopback
Output or Input
V.11 Loopback
Output or Input
1PPS_N
Output or Input
GND
—
GND
—
1PPS_P
Input
TOD_N
Output or Input
TOD_P
Output or Input
Signal Name
ALARM0_IN
ALARM1_IN
—
ALARM2_IN
ALARM3_IN
—
—
Troubleshooting
Description
V.11 Loopback interface
pins (Optional)
V.11 Loopback interface
pins (Optional)
1PPS RS422 signal
—
—
1PPS RS422 signal
Time-of-Day character
Time-of-Day character
Description
Alarm input 0
Alarm input 1
No connect
Alarm input 2
Alarm input 3
No connect
No connect