Panasonic KX-NCP500 User Manual page 128

PT/SLT/PS/SIP Extn.
Off-hook. Enter
FWD
0
OR
1
7 1
OR
2
71. Enter 0 to 2 as you desire.
DND Off
Both Calls
1
Outside Calls
OR
0
Intercom Calls
Enter 1 to set
or 0 to cancel.
Set
C.Tone
Cancel
On-hook.