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Appendix B. Connector Pinouts
B-6 TDU 120e User Manual 61202156L2-1
Base DS-1 (PBX)
On the rear of the TDU 120e are two connectors labeled
DS-1. These connectors are used for connecting to a PBX
or other terminal equipment.
See Table B-7 for the pinout of the 8-pin modular connec-
tor and Table B-8 on page B-7 for the pinout of the female
15-pin D-Connector.
Table B-7. Base DS-1 Pinout of the 8-Pinout Modular Connector
Pin Name Description
1 R1 TXDATA-RING Sends data toward the DTE (PBX)
2 T1 TXDATA-TIP Sends data toward the DTE (PBX)
3 UNUSED
4 R RXDATA-RING Receives data from the DTE (PBX)
5 T RXDATA-TIP Receives data from the DTE (PBX)
6, 7, 8 UNUSED