FXO 0/0 Pinouts Pin 1,2 3 4 5,6 Name — Ring Tip — Description Unused Ring lead of the 2-wire interface Tip lead of the 2-wire interface Unused Table A-3. NET 1 through NET 4 (T1 0/1 through T1 0/4) Pinouts Pin 1 2 Name R1 T1 Description Receive data from the network (Ring 1) Receive data from the network (Tip 1) 3 4 5 6-8 — R T — Unused Transmit data toward the network (Ring) Transmit data toward the network (Tip) Unused Table A-4. 10/100BaseT (ETH 0/1 through ETH 0/2) Pinouts Pin 1 2 3 4, 5 6 7, 8 Name TX1 TX2 RX1 — RX2 — Description Transmit Positive Transmit Negative Receive Positive Unused Receive Negative Unused