Panasonic KX-TD500 System Reference Manual page 435

C. Outgoing Call Features
1.00 Line Selection-Calling
Description
PITS telephones may have many line access
buttons and the set user can access a desired line
either directly by pressing the button or by
employing automatic line selection feature.
This Line Selection-Calling feature offers the
following three line-preferences and the user can
select only one preference for your PITS set:
• Prime Line Preference-Calling (default)
• Idle Line Preference-Calling
• No Line Preference-Calling
If Prime Line Preference or Idle Line Preference is
selected, the user can get the programmed line
automatically for making a call by simply lifting the
handset or pressing the SP-PHONE button (On-
Hook Dialing).
If No Line Preference is selected, no line is
accessed until the user directly presses the
desired button.
Every PITS telephone is assigned to Prime Line
Preference on PDN button by default setting. This
can be changed on a PITS telephone basis using
PITS station programming. Refer to Section 13-C-
4.00 "Automatic Line Hunting (Calling) Selection".
Line Preference-Calling feature newly assigned on
a PITS telephone overrides the previous
assignment.
Note
Line access buttons that are available for a PITS
telephone are:
• DN buttons ... Primary Directory Number
• CO buttons... Private CO (PCO), Single CO
4-C-1
(PDN) buttons
Secondary Directory Number
(SDN) buttons
(Refer to Section 4-B-3.01
through 3.02.)
(SCO), Group CO (GCO)
(Refer to Section 4-B-3.03
through 3.05.)