
Appendix A. Pinouts
61200208L1-1 Express 5210 User Manual A-5
Table A-6. DBU Card Pin Assignments
Table A-7. Voice Card Connector Pin Assignments
Pin Name Description
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
4TNetwork-Tip
5 R Network-Ring
6 - 8 - Not Used
RJ Pin # Function
Dual FXS Card
4Ring
5Tip
Dual FXO Card
4Ring
5Tip
Dual E&M Card
1Ring
2Tip
3 E Lead
4 Frame Gnd
5 -48 Volts
6 M Lead
7Tip 1
8 Ring 1
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