B
3
Features
3-18
Features
Feature References
Section 3, Features,
Answering, Direct CO
Line Access, Direct
CO Line Group
Ringing, Delayed
LED Indication, CO Line
Ringing Tone Selection for CO
Line Access, CO Line Group
Buttons
Operation References
DPT Features,
—User Manual
Answering, Direct CO Line
Outward Dialing – Line Access, CO Line Group
B
utton, Loop-CO (L-CO)
Description
All CO lines can be assigned to a flexible CO button on a digital
proprietary telephone (DPT). The assigned button serves as a Loop-
CO (L-CO) button. An incoming call on any CO line arrives at the
L-CO, unless there are S-CO or G-CO buttons associated with the
line or unless the button is already in use. To make an outside call,
the DPT user can simply press the dedicated L-CO button.
Conditions
• No L-CO button is originally provided on a DPT. A flexible CO
button can be assigned as an L-CO button in either system or station
programming.
• It is possible to assign more than one L-CO button on a DPT.
• Pressing the L-CO button provides the same operation as dialing the
automatic line access code. This results in Automatic Line Access or
Automatic Route Selection (ARS), if programmed.
• Immediate, delayed, no ringing or no incoming call (disable) can be
selected on an extension–CO line group basis.
• The DPT user can choose a desired ringer frequency for each L-CO
button by system or station programming.
Programming References
Section 4, System Programming,
[005] Flexible CO Button Assignment
[400] CO Line Connection Assignment
[603]–[604] DIL 1:N Extension and Delayed Ringing — Day / Night
[605]–[606] Outgoing Permitted CO Line Assignment — Day / Night
Station Programming.......................................................User Manual,
Flexible Button Assignment – Loop-CO (L-CO) Button
Ringing Tone Selection for CO Buttons
Feature References
Section 3, Features,
Answering, Direct CO Line
Line Access, Direct
LED Indication, CO Line
Ringing, Delayed