Panasonic KX-NCP500 Programming Manual page 26

2.1.1 Starting Maintenance Console and Software Modes
Connection Setting for ISDN Remote
Setting
Dial Number
26 PC Programming Manual
Values
30 digits (consisting of 1-9,
0, *, #, -, and "," [comma])
Explanation
Enter the telephone number to be dialled to access the
PBX.