ADTRAN TSU 120e - Manual (Page 123)

Appendix C. Network Pinouts
61202129L1-1 TSU 120 User Manual C-5
Base DSX-1 (PBX)
See Table C-5 for Base DSX-1 pinout connections for either-posi-
tion Modular Jack Interface.
Connections
The modular jack interface pinout is as follows:
Connector type RJ-48C
Table C-5. Pinout Connectors for Modular Jack Interface
Pin Name Description
1 R1 TXDATA-RING Send data towards the DTE (PBX)
2 T1 TXDATA-TIP Send data towards the DTE (PBX)
3 UNUSED —
4 R RXDATA-RING Receive data from the DTE (PBX)
5 T RXDATA-TIP Receive data from the DTE (PBX)
6, 7, 8 UNUSED —