B-6
Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide
OL-23778-01
Appendix B Cable Specifications
BITS Port Pinouts
BITS Port Pinouts
Table B-6 list the pinouts for the BITS interface RJ-45 port on the Cisco ASR 901 router.
Time of Day Pinouts
Table B-6 list the pinouts for the Time of Day RJ-45 interface on the Cisco ASR 901 router.
GPS Port Pinouts
The Cisco ASR 901 router has a 10Mhz and a 1PPS GPS port that allow you to configure input or output
clocking with a GPS device.
Table B-8 summarizes the pinouts for the 10Mhz and 1PPS interfaces.
Note For pinouts related to ToD and 1PPS using the BITS interface, see Console Port Signals and Pinouts.
Table B-6 BITS Pinouts for the Cisco ASR 901 router
Pin Signal Name Direction Description
1 RX ring Input Receive ring
2 RX tip Input Receive tip (T1/E1)
3 Not connected
4 TX ring Output Transmit ring
5 TX tip Output/input Transmit tip (T1/E1)
6 Not connected
7 Not connected
8 Not connected
Table B-7 Time of Day RJ45 Interface Pinout
Pin Signal Name Direction Description
1 Not connected
2 Not connected
3 Not connected
4 Ground
5 Ground
6 Not connected
7 TOD_N Output/Input Time of Day RS422 differential input
or output
8 TOD_P Output/Input Time of Day RS422 differential input
or output
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