Panasonic KX-T336 System Reference Manual page 443

1.01 Prime Line Preference-Calling
Description
Automatically connects a PITS telephone to a
line pre-assigned as Prime Line by simply lifting
the handset or pressing the SP-PHONE button.
Once the Prime Line Preference is selected from
the Preference Calling features, one of the
following buttons should be assigned as the
Prime Line of the PITS telephone:
• DN button - PDN (default), SDN
• CO button - PCO, SCO, GCO
• ICM button
Programming
PITS Station Programming
Automatic Line Hunting (Calling)
Selection
Conditions
A line access button except PDN and ICM cannot
be assigned as the Prime Line unless it has been
assigned to a PITS telephone by system
programming.
PDN button and ICM button are fixed feature
buttons and always provided on PITS
telephones.
However, SDN, PCO, SCO and GCO buttons are
assignable feature buttons.
If you assign SDN, PCO, SCO or GCO button as
Prime Line, pre-assignment as a line access
button on a PITS telephone must be done
beforehand by system programming.
Silence when going off-hook indicates that the
prime line is busy.
When two or more PDN buttons are assigned on
a PITS (up to three PDN buttons can be
assigned per PITS), line selection feature always
functions if at least one PDN button is available.
This feature is available when a PITS telephone
has no incoming call, or when a PITS telephone
does not answer an incoming call automatically
by going off-hook, that is, "Ringing Line
Preference-Answering" overrides "Prime Line
Preference-Calling."
Refer to Section 4-D-1.01 "Ringing Line
Preference-Answering" for further information.
The user can override the preferred line
temporarily to access another line (Pre-
selection). To override the line, without lifting the
handset nor pressing the SP-PHONE button,
press the desired line access button listed below:
• PDN button
• Private CO button
Reference
• Single CO button
12-C-4.00
Operation
4-C-2
• Group CO button
• ICM button
1. Lift the handset or press the SP-
PHONE button.
• The indicator on the button
assigned as the prime line
lights in green.
• Dial tone 1 or 3 or 4 sounds.
2. Call the other party depending on
the assigned line.