ADTRAN 1200214L1 - Manual (Page 137)

61200214L1-1 IQ Probe User Manual 113
Appendix A. Pinouts
Table A-H
Dial Backup Card Connectors
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 2B+D ISDN
1-3 - Not Used
4 T Network-Tip
5 R Network-Ring
6 - 8 - Not Used