Panasonic KX-T336 System Reference Manual page 288

2.08 Single CO (SCO)
Description
To support prompt handling of outside calls, a CO
line can be assigned to a DN button on a PITS
telephone.
When this function is assigned, a DN button on a
PITS serves as the Single CO (SCO) button.
SCO button feature provides easy access to the
CO lines for extension users who make and
receive many outside calls.
The PITS telephone user can access a CO line
by simply pressing the SCO button without
dialing the CO line access code, and an incoming
outside call can be directed to the PITS
telephone via dedicated SCO button without
assistance of the Operator.
In addition, the associated status LED provides
busy/idle status and the busy to idle reminder.
SCO button can be used either one-way service
(Incoming Only or Outgoing Only) or two-ways
service (Both-Way).
SCO button can be assigned to a PITS telephone
in conjunction with DIL 1:1 or DIL 1:N feature.
SCO button with DIL 1: 1 feature
When DIL 1: 1 feature is employed, SCO button
can be assigned to the PITS telephone
programmed as the destination of DIL 1: 1
feature.
If SCO button is not assigned on the PITS
telephone, an incoming CO call arrives at a PDN
button on it.
The table below shows the relationship between
the DN button programmed as Single CO and the
CO line status:
Indicator
Off Idle
Lights green I-use
Green 60 wink I-hold
Green 120 wink I-exclusive hold, consultation hold,
unattended conference
Green 240 wink Incoming call (DIL 1: 1)
Lights red Other-use, exclusive hold
Red 60 wink Other-hold
Red 120 wink Privacy release possible
Red 240 wink Incoming call (DIL 1: N)
CO Line Status
3-D-16
(30393)
CO line which can be assigned as a SCO button
is:
• A CO line which belongs to a trunk group
assigned as Bothway or Incoming Only and
whose Incoming Mode (Day) is DIL 1: 1, or DIL
1: N.
• A CO line which belongs to a trunk group
assigned as Outgoing Only.
Programming
System Programming
"Extension-Station (2/3)",
Type and Number
Conditions
• Even if Automatic Route Selection (ARS)
function is set, it is overridden by an outgoing
call made by pressing the Single CO button.
• The Single CO button indicator will light up red
in the following circumstances.
<1> When the Single CO is not In Service
<2> Idle status and Single CO in Busy Out
status
<3> Idle status and Single CO in trunk route
control status
When the Single CO button is pressed in
any of these statuses, its indicator lights up
green but busy tone is heard.
In the following cases, the Single CO button
indicator remains lit green and reorder tone is
sent.
<1> When Calling Party Control signal has
been detected during a call using the
Single CO.
<2> When outgoing restriction applies to an
outgoing call made from the Single CO.
Reference
VT Dumb
9-G-1.02 10-C-24.00