Panasonic KX-T336 System Reference Manual page 519

The following table shows the results of the calls arriving at an extension setting
this function depending on the conditions of the preset destination.
Type of Call Arriving
at Setting Extension
Idle status
Extension call
Busy status
Conditions except In Service
DIL (1:1) or DISA call
Idle status
Busy status
Conditions except In Service
Idle status
DID call
Busy status
Conditions except In Service
Condition of Destination
4-F-19
Forwarding
Execution
Call is forwarded to external
destination.
Call is placed on setting extension.
Call is forwarded to external
destination.
Call is placed on setting extension.
Call is placed on setting extension.
: Forwarding possible
: Forwarding impossible
Conditions are "Out of Service,"
"Fault" and "Pre-Installed." See
Section 14-C-2.02 "Port" for details.
Result