Installation guide

Appendix A. Connector Pin Definitions NetVanta 1000/1000R Series Hardware Installation Guide

Dial Backup Interface Module Pinouts (DBU Connector)

An optional DIM is required for dial backup applications.

Table A-13. Analog Modem and ISDN BRI DBU Connector Pinouts

Pin Name Description

1-3 — Unused

4 R Network–Ring

5 T Network–Tip

6-8 — Unused

Table A-14. 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-15. Serial DBU Connector Pinouts

Pin Description

1, 2 Unused

3CTS

4TXD

5RXD

6GND

7 DCD

8Unused