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T1/E1 Port Pinout
RJ48 T1/E1 Port Pinouts
The figure below shows the RJ48 connector wiring for the T1/E1 cable for the interface module. The table
shows the pinout configuration for the RJ4C connectors for both the shielded and unshielded cables for either
T1 or E1.
Figure 120: RJ48 Connector Wiring
The table below summarizes the RJ48 port pinout.
Table 35: RJ48 Port Pinouts
Unshielded
Shielded
Description
Pin
Description
Pin
Receive Ring
1
Receive Ring
1
Receive Tip
2
Receive Tip
2
3
Receive Shield
3
Transmit Ring
4
Transmit Ring
4
Transmit Tip
5
Transmit Tip
5
6
Transmit Shield
6
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
171
Troubleshooting
T1/E1 Port Pinout