104 Appendix A Technical specifications
Table 24 56/64K CSU/DSU cable pinouts for crossover connection
Nortel Networks termination
Signal
Transmit tip
Transmit ring
not used
not used
not used
not used
Receive tip
Receive ring
The cable will operate properly if pins 3, 4, 5, and 6 are not connected.
Table 25
connection.
Table 25 56/64K CSU/DSU cable pinouts for straight-through connection
Nortel Networks termination
Signal
Transmit tip
Transmit ring
not used
not used
not used
not used
Receive tip
Receive ring
315990-D Rev 00
Caution: For crossover connections, do not use Ethernet cable. The link
will not be established.
provides the 56/64K CSU/DSU cable pinouts for a straight-through
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