Interface Pinouts
These modules may have either the UP/DOWN switch type or the ON/OFF slide switch type. Each type is illustrated below.
Switches
up down
1 2 3 4 CSU/DSU LINE
Figure D-1 Rear View of ATL-CSU/DSU Link Module with UP/DOWN Switches
Figure
When connecting two bridge/routers
Switch number 1 determines whether the
On 64 Kbps units only, switch number 3 determines the mode of the
On 56 Kbps units, the position of switch 3 is not a factor for
A DSU/CSU crossover cable would be constructed as follows: | 1 |
| 2 |
| 7 |
| 8 |
80