Panasonic KX-NT400

Button Description & Programming Input
Loop-CO (L-CO)
Used to access an idle CO line for making outside calls.
Incoming outside calls from any CO line arrive at this button.
Programming Input
The L-CO button light shows the current status as follows:
• Green on: The CO line is seized by you.
• Red on: The CO line is busy.
<Regular Hold mode>
• Flashing green slowly: Your held call
• Flashing red: Another extension’s held call
<Exclusive Call Hold mode>
• Flashing green moderately: Your held call
Group-CO (G-CO)
Used to access an idle CO line in a specified CO line group for making
outside calls.
Incoming calls from CO lines in the assigned CO line group arrive at
this button.
Programming Input
+ CO line group no. (2 digits)
The G-CO button light shows the current status as follows:
• Green on: The CO line is seized by you.
• Red on: The CO line is busy.
<Regular Hold mode>
• Flashing green slowly: Your held call
• Flashing red: Another extension’s held call
<Exclusive Call Hold mode>
• Flashing green moderately: Your held call
Single-CO (S-CO)
*1
Used to access a specified CO line for making or receiving outside
calls.
Programming Input
+ CO line no. (3 digits)
The S-CO button light shows the current status as follows:
• Green on: The CO line is seized by you.
• Red on: The CO line is busy.
<Regular Hold mode>
• Flashing green slowly: Your held call
• Flashing red: Another extension’s held call
<Exclusive Call Hold mode>
• Flashing green moderately: Your held call
Document Version 2010-01 Operating Instructions 135
Customizing the Telephone