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4-wire Switched 56
V.34 and 1B+D ISDN
61200212L1-1
Pin
Name
1
R1
2
T1
3-6
-
7
T
8
R
1-3
-
4
T
5
R
6-8
-
DSU IQ User Manual
Table A-6. DBU Card Pin Assignment
Description
Transmit Data from DSU to Network-Ring
1
Transmit Data from DSU to Network-Tip 1
Not Used
Receive Data from Network to DSU-Tip
Receive Data from Network to DSU-Ring
Not Used
Network-Tip
Network-Ring
Not Used
Appendix A. Pinouts
A-5
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