DPT Overview 1-17
1.1 Configuration
Loop-CO (L-CO) button
All CO lines can be assigned to a flexible CO button on a proprietary telephone. The
assigned button serves as an L-CO button. An incoming call on any CO line arrives at
the L-CO button, 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, you simply press the
dedicated L-CO button. Pressing the L-CO button provides the same operation as
dialling an automatic line access code.
Programming References
• Station Programming (Section 2)
Flexible Button Assignment — Loop-CO (L-CO) Button
(System Programming — [005] (Installation Manual) can be used for this assignment.)
Feature References
Flexible Buttons (Section 1.1/Configuration)
Outward Dialling, Line Access — Line Access, Automatic
Single-CO (S-CO) button
A S-CO button is a CO line access button. This allows you to access a specific line by
pressing a S-CO button. An incoming call can be directed to a S-CO button.
Conditions
• Only one S-CO button can be assigned to a CO line.
• It is possible to assign one CO line to a S-CO button, G-CO button, and L-CO button.
Programming References
• Station Programming (Section 2)
Flexible Button Assignment — Single-CO (S-CO) Button
(System Programming — [005] (Installation Manual) can be used for this assignment.)
Feature References
Flexible Buttons (Section 1.1/Configuration)
Outward Dialling, Line Access — Line Access, Individual
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