NEC 2400 Integration Manual page 48

Hardware Installation
Table 4-3. MCI I/O Port DIP-Switch SW02 or SW12 Settings for Switches 1
through 8
Switch
Number
1
2
3
4
5
6
7
8
3. Connect one end of a 25-pair cable to the MCI I/O port on the switch.
To create the cable, refer to Table 4-4 for the correct cable pinouts.
4-6
Issue 2 December 1995
Setting Function
ON When PB lead is - terminal is busy
OFF When PB lead is + terminal is busy
ON DTR signal is always ON
OFF DTR signal is controlled by the CPU
ON DSR signal is not provided
OFF DSR signal is provided
ON CD is not provided
OFF CD is provided
ON CS is not provided
OFF CS is provided
ON CI is not provided
OFF CI is provided
ON PB signal is not provided
OFF PB signal is provided
OFF Not used
NOTE:
Recommended Default Settings:
If you use port 0, configure switches 01 and 02. If you use
port 1, configure switches 11 and 12.
Standard switch settings for SW01 or SW11 are 1 ON, 2 OFF,
3 ON, 4 OFF, 5 OFF, 6 OFF, 7 ON, and 8 ON.
Standard switch settings for SW02 or SW12 are 1 ON, 2 ON,
3 ON, 4 ON, 5 ON, 6 ON, 7 ON, and 8 OFF.