Serial port
128
Models 2603, 2621, and 2635 Getting Started Guide
D • IPLink Physical Connectors
E1/T1 (RJ-48C Connector)
The T1/E1 transmit signals are not polarity sensitive, even though they have the traditional designation of Tip
and Ring.
Figure 86. T1/E1 RJ-48C connector
Table 11. T1/E1 Port
Pin No.
Signal
1
Receive (Ring)
2
Receive (Tip)
3
Shield (Receive)
4
Transmit (Ring)
5
Transmit (Tip)
6
Shield (Transmit)
7
8
1 2 3 4 5 6 7 8
RX RX
TX
TX