Table A-14. Analog Modem And Isdn Bri Dbu Connector Pinouts; Table A-15. Isdn S/T Dbu Connector Pinouts - ADTRAN NetVanta 4300 Series Hardware Installation Manual

NetVanta 4300/4400 Series
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
1-3 —
4 R
5 T
6-8 —

Table A-15. ISDN S/T DBU Connector Pinouts

Pin Name
1, 2 —
3 R1
4 R
5 T
6 T1
7, 8 —
61200890E2-34T
Description
Unused
Network–Ring
Network–Tip
Unused
Description
Unused
Network Receive–Ring 1
Network Transmit–Ring
Network Transmit–Tip
Network Transmit–Tip 1
Unused
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