Table A-12. Dbu Connector Pinouts; Table A-13. Dbu Connector Pinouts - ADTRAN NetVanta 3000 Series Hardware Installation Manual

Appendix A. Connector Pin Definitions
Dial Backup (DBU) Connectors
Table A-12 describes the pinouts for the following modules: 56/64K, T1/FT1 (1st generation), and
T1/FT1+DSX-1 (1st generation).

Table A-12. DBU Connector Pinouts

Pin Name
1 R1
2 T1
3 —
4 T
5 R
6-8 —
Table A-13 describes the pinouts for the following modules: Serial, SHDSL, E1/FE1, E1/FE1 with G.703
Drop, T1/FT1 (2nd generation), and T1/FT1+DSX-1 (2nd generation).

Table A-13. DBU Connector Pinouts

Pin Name
1-2 —
3 R1
4 R
5 T
6 T1
7-8 —
An optional DIM is required for dial backup applications.
56
Description
Network–Ring 1
Network—Tip 1
Unused
Network–Tip
Network–Ring
Unused
Description
Unused
Network–Ring 1
Network–Ring
Network—Tip
Network—Tip 1
Unused
© 2004 ADTRAN, Inc.
NetVanta 3000 Series Hardware Installation Guide
61200860L1-34E