Appendix A Technical specifications 83
The following table 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 |
| Remote termination | |
|
|
|
|
Signal | Pin # to Pin # | Signal | |
|
|
|
|
|
|
|
|
Transmit tip | 1 | 7 | Receive tip |
|
|
|
|
Transmit ring | 2 | 8 | Receive ring |
|
|
|
|
Not used | 3 | 3 | Not used |
|
|
|
|
Not used | 4 | 4 | Not used |
|
|
|
|
Not used | 5 | 5 | Not used |
|
|
|
|
Not used | 6 | 6 | Not used |
|
|
|
|
Receive tip | 7 | 1 | Transmit tip |
|
|
|
|
Receive ring | 8 | 2 | Transmit ring |
|
|
|
|
The cable operates properly if you do not connect pins 3, 4, 5, and 6.
The following table provides the 56/64K CSU/DSU cable pinouts for a
Table 24 56/64K CSU/DSU cable pinouts for straight-through connection
Nortel termination |
| Remote termination | |
|
|
|
|
Signal | Pin # to Pin # | Signal | |
|
|
|
|
|
|
|
|
Transmit tip | 1 | 1 | Transmit tip |
|
|
|
|
Transmit ring | 2 | 2 | Transmit ring |
|
|
|
|
Not used | 3 | 3 | Not used |
|
|
|
|
Not used | 4 | 4 | Not used |
|
|
|
|
Not used | 5 | 5 | Not used |
|
|
|
|
Not used | 6 | 6 | Not used |
|
|
|
|
Receive tip | 7 | 7 | Receive tip |
|
|
|
|
Receive ring | 8 | 8 | Receive ring |
|
|
|
|
