DPT Overview
1-13
1.1
Configuration
Line Access Buttons
The following three types of CO button can be used to seize a CO line when making a call.
• Group-CO (G-CO) button
• Loop-CO (L-CO) button
• Single-CO (S-CO) button
Conditions
• A flexible CO button can be assigned as a Line Access Button (G-CO, L-CO or S-CO) in
either System/Station Programming. Once a flexible CO button is assigned as a Line
Access Button, it provides a line status condition in the form of a lighting pattern and color
indication. Please refer to "LED Indication" in this section.
• It is possible to have multiple appearance of the same G-CO or L-CO buttons on the same
telephone. Incoming and outgoing calls on the line are shown on the button in the
following priority.
S-CO > G-CO > L-CO
Group-CO (G-CO) button
To support efficient utilization of CO lines, a group of CO lines (CO line group) can be
assigned to a CO button. This button is referred to as Group-CO (G-CO) button. Any
incoming calls from any CO line in the CO line group arrive at the G-CO button. To make a
CO call, you can access an idle CO line in the group by simply pressing the dedicated G-CO
button.
Conditions
• It is possible to assign the same line to an S-CO button, a G-CO button, and an L-CO
button.
• It is needed to program the extension for making and/or receiving calls on CO line groups.
• When your extension is assigned as incoming call destination for a CO line, you cannot
receive any incoming CO call unless a G-CO, L-CO or S-CO button associated with the
line is assigned.
Programming References
• Station Programming (Section 2)
Flexible Button Assignment — Group-CO (G-CO) Button
(System Programming — [005] (Installation Manual) can be used for this assignment.)
Feature References
Flexible Buttons (Section 1.1/Configuration)
Outward Dialing, Line Access — Line Access, CO Line Group
With
Compliments
Absolute
Phone
&
Data