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PT Overview 1-11
1.1 Configuration
Line Access Buttons
One of the following three types of CO buttons must be used to seize an outside (CO)
line when making a call.
• Group-CO (G-CO) button
• Other-CO (O-CO) button
• Single-CO (S-CO) button
Conditions
• A flexible CO button can be assigned as a Line Access Button (G-CO, O-CO or S-CO)
in Station Programming. Once a flexible CO button is assigned as a Line Access
Button, it provides the line status using lighting patterns and color indication. Please
refer to “LED Indication” in this section.
• You can set the G-CO and S-CO buttons on one telephone. Incoming and outgoing
calls on the line are shown on the button in the following priority.
S-CO > G-CO
Group-CO (G-CO) Button
To use outside (CO) lines efficiently, a group of outside (CO) lines (outside (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 outside (CO) line in the outside (CO) line group
arrive at the G-CO button. To make an outside call, you can access an idle outside (CO)
line in the group by simply pressing the assigned G-CO button.
Conditions
• The same line can be assigned as an S-CO button and G-CO button.
• The extension for making and/or receiving calls in outside (CO) line groups must be
programmed.
• When your extension is assigned as the incoming call destination for an outside (CO)
line, you cannot receive any incoming outside calls unless a G-CO, O-CO or S-CO
button associated with the line is assigned.
Programming Reference
• Station Programming (Section 2)
Flexible Button Assignment — Group-CO (G-CO) Button
Feature References
Feature Buttons — Flexible Buttons (Section 1.1 Configuration)
Outward Dialing, Line Access — Line Access, Outside (CO) Line Group