NEC 2400 Integration Manual page 88

NEAX 2400 Switch Administration
5. Look at the value in the DATA field and write the value on the following line
6. Enter 01 in the DATA field.
You have completed the NEAX 2400 MCI switch administration. Proceed to
Chapter 8, "Switch Integration Device Administration", to configure the switch
integration device.
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Issue 2 December 1995
Current DATA value: _________
NOTE:
Do not change the value in the DATA field until you consult with
your switch administrator. This index contains other fields that
control features not related to MCI.