NEC univerge sv8100 Installation Manual page 202

Issue 4.0
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Enter the number of the item you want to program.
20-13-nn FCTN Clsnn
nnnnn
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To select the Class of Service number to be programmed, press the FLASH or
the volume  or  keys.
Enter data for the item you selected + Hold.
Enter data for the next item in the program.
- OR -
Press MSG once to enter a new item number.
- OR -
Press MSG until you exit that series programming section.
UNIVERGE SV8100