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APPENDIX A. CONNECTOR PIN DEFINITIONSThe following tables provide the pin assignments for the base unit, network interface modules (NIMs), and
dial backup interface modules (DIMs).
Base Unit PinoutsTable A-1. 10/100Base-T Ethernet Port Pinouts
Pin Name Description
1 TX1 Transmit Positive
2 TX2 Transmit Negative
3 RX1 Receive Positive
4, 5 — Unused
6 RX2 Receive Negative
7, 8 — Unused
Table A-2. 1000Base-T Gigabit Ethernet Port Pinouts
Pin Name Description
1 TRD0+ Transmit/Receive Positive
2 TRD0- Transmit/Receive Nega tive
3 TRD1+ Transmit/Receive Positive
4 TRD2+ Transmit/Receive Positive
5 TRD2- Transmit/Receive Nega tive
6 TRD1- Transmit/Receive Nega tive
7 TRD3+ Transmit/Receive Positive
8 TRD3- Transmit/Receive Nega tive