Panasonic KX-TD500 System Reference Manual page 634

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
Extension call Idle status
Busy status
Assigned to DND
PITS programming mode
Conditions except In Service
DIL (1:1) or DISA call Idle status
Busy status
Assigned to DND
PITS programming mode
Conditions except In Service
Idle status
DID call
Busy status
Assigned to DND
PITS programming mode
Conditions except In Service
Condition of Destination
5-D-16
Forwarding
Execution
Call is forwarded to destination.
Call is placed on setting extension.
Call is forwarded to destination.
Call is placed on setting extension.
Call is forwarded to destination.
Call is placed on setting extension.
: Forwarding possible
: Forwarding impossible
Conditions are "Out of Service",
"Fault" and "Pre-Installed". See
Section 15-C-2.02 "Port" for details.
Result