ADTRAN NetVanta 3120 (with DBU) - Table A-4. DBU Connector Pinouts; Table A-5. ADSL Connector Pinouts

Appendix A. Connector Pin Definitions NetVanta 3100 Series Hardware Installation Guide
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Table A-4. DBU Connector Pinouts
Pin Name Description
1-2 — Unused
3 R Network–Ring
4T Network–Tip
5-6 — Unused
Table A-5. ADSL Connector Pinouts
Pin Name Description
1-2 — Unused
3 R Network–Ring
4T Network–Tip
5-6 — Unused