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61202175L1-1
Table A-3. Control Connector Pin Assignments
RJ Pin#
*Used for hardware flow control.
Table A-4. DBU Card Pin Assignments
Pin
Name
4-wire Switched 56
1
R1
Transmit Data from DSU to Network-Ring 1
2
T1
Transmit Data from DSU to Network-Tip 1
3-6
-
Not Used
7
T
Receive Data from Network to DSU-Tip
8
R
Receive Data from Network to DSU-Ring
V.34 and 1B+D ISDN
1-3
-
Not Used
4
T
Network-Tip
5
R
Network-Ring
6 - 8
-
Not Used
Express 5200 User Manual
Appendix A.Pinouts
Function
1
GND
2
RTS
3
TD
4
DSR
5
RD
6
CTS*
7
DTR
8
DCD
Description
Direction
I
I
O
O
O
I
O
A-3
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