Description
Direction
Signal Name
Pin
Time of Day character
Output or Input
TOD_P
8
The table below summarizes the ToD/1-PPS port pinouts for ASR900-RSP2A.
This port requires the use of SHIELDED cable for GR-1089-core Intra-Bldg lightning surge protection.
The RS422 interface is per industry-standard EIA-422 /RS422 specification.
Note
Table 22: RJ45 1-PPS/ToD Port Pinouts
Description
Direction
Signal Name
Pin
Do not connect
Output
RESERVED
1
Do not connect
Input
RESERVED
2
Do not connect
—
RESERVED
3
—
—
GND
4
—
—
GND
5
Do not connect
—
RESERVED
6
Time of Day character
Output or Input
TOD_N
7
Time of Day character
Output or Input
TOD_P
8
Alarm Port Pinouts
The table below summarizes the external alarm input pinouts.
Table 23: External Alarm Input Pinouts
Description
Signal Name
Pin
Alarm input 0
ALARM0_IN
1
Alarm input 1
ALARM1_IN
2
No connect
—
3
No connect
—
4
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
124
Troubleshooting
Alarm Port Pinouts