ADTRAN NetVanta 3000 Series - Table A-14. Analog Modem and ISDN BRI DBU Connector Pinouts; Table A-15. ISDN S;T DBU Connector Pinouts; Table A-16. Serial DBU Connector Pinouts

Appendix A. Connector Pin Definitions NetVanta 3000 Series Hardware Installation Guide
80 Copyright © 2006 ADTRAN, Inc. 61200860L1-34K
Dial Backup Interface Module Pinouts (DBU Connector)
An optional DIM is required for dial backup applications.
Table A-14. Analog Modem and ISDN BRI DBU Connector Pinouts
Pin Name Description
1-3 — Unused
4 R Network–Ring
5T Network–Tip
6-8 — Unused
Table A-15. ISDN S/T DBU Connector Pinouts
Pin Name Description
1, 2 — Unused
3 R1 Network Receive–Ring 1
4 R Network Transmit–Ring
5 T Network Transmit–Tip
6 T1 Network Transmit–Tip 1
7, 8 — Unused
Table A-16. Serial DBU Connector Pinouts
Pin Description
1, 2 Unused
3CTS
4TXD
5RXD
6GND
7 DCD
8Unused