Panasonic KX-TD500 System Reference Manual page 700

<Type 4>
Pressing the F7 key (PGM Mode Entry) in Type 1 introduces this field. That is, this
function field appears in the Busy Lamp Type program mode.
This field is available for advancing to next screen or returning to previous screen in
the Busy Lamp Type program mode.
Type 4
F1
(LOOP & TRG))
F2
(Next Page)
F3
(Previous Page)
F7
(PGM Mode Exit)
F8
(Function Select)
<Type 5>
This field is available for programming Busy Lamp Type screen.
Type 5
F1
(LOOP & TRG)
F2 F3
(
( )
F6
(Clear)
F7
(Memory)
F8
(Function Select)
LOOP & TRG
Screen
Advancing to the next BLF Screen
Returning to previous BLF Screen
Type 1
Type 5
F4
F5
) ( ) ( )
(Exiting BLF Program mode, returning to Type 1
screen.)
(Programming BLF)
LOOP & TRG
screen
Move the cursor onto the extension to be as-
signed or changed.
Clearing the extension number at the cursor
position.
Storing extension number at the cursor position.
Type 4
6-C-12