Serial port 128
Models 2603, 2621, and 2635 User Manual D • OnSite 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
1Receive (Ring)
2Receive (Tip)
3Shield (Receive)
4Transmit (Ring)
5Transmit (Tip)
6Shield (Transmit)
7
8
12345678
RX RX TX TX