- Adtran ISDN Router/Bridge User Manual

Appendix D. Connector Pinouts
D-2 Express 4110/4120 User Manual 61200176L3-1
Table D-3. RJ-11 POTS
Table D-4. 10BaseT Ethernet
Pin 3 Ring
Pin 4 Tip
Pin 1 RX1
Pin 2 RX2
Pin 3 TX1
Pin 6 TX2