Panasonic KX-T7565 User Manual page 122

Operation
T7536 / T7235
Features
Press "Features."
122
OR
NEXT
Press "C.Pickup Deny."
Rotate Jog Dial or
press "NEXT" until the
following is displayed.
C.Pickup Deny ( 1/0)
1
Deny
OR
0 Allow
C.Tone
Dial 1 to deny
or 0 to allow.
User Manual
On-hook.