Table 23 56/64K Csu/Dsu Cable Pinouts For Crossover Connection; Table 24 56/64K Csu/Dsu Cable Pinouts For Straight-Through Connection - Nortel 1750 Install Manual

Table 23 provides the 56/64K CSU/DSU cable pinouts for a crossover
connection.

Table 23 56/64K CSU/DSU cable pinouts for crossover connection

Nortel termination
Signal
Transmit tip
Transmit ring
not used
not used
not used
not used
Receive tip
Receive ring
The cable operates properly if you do not connect pins 3, 4, 5, and 6.
Table 24 provides the 56/64K CSU/DSU cable pinouts for a straight-through
connection.

Table 24 56/64K CSU/DSU cable pinouts for straight-through connection

Nortel termination
Signal
Transmit tip
Transmit ring
not used
not used
not used
not used
Receive tip
Receive ring
Appendix A Technical specifications 89
Remote termination
Pin # to Pin # Signal
1 7 Receive tip
2 8 Receive ring
3 3 not used
4 4 not used
5 5 not used
6 6 not used
7 1 Transmit tip
8 2 Transmit ring
Remote termination
Pin # to Pin # Signal
1 1 Transmit tip
2 2 Transmit ring
3 3 not used
4 4 not used
5 5 not used
6 6 not used
7 7 Receive tip
8 8 Receive ring
Nortel VPN Router Installation — VPN Router 1750