Adtran 1202890E1 Manual Do Utilizador
NetVanta 4300/4400 Series
64
Copyright © 2013 ADTRAN, Inc.
61200890E2-34R
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
5
T
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