User Guide

Getting Started
3
Item
Description
LED Indicators
Indicate the Ext key status. For more information, refer to LED
Instructions on page 3.
LCD Screen
Shows key feature label, key feature icon and the label of
switch key (such as List 1 or List 2) indicating the current page
at the top of the LCD screen.
Ext out Jack
Connects the supplied cord to the Ext in jack on the next
expansion module.
Power Interface
Connects a power adapter to the expansion module. When
more than two expansion modules are connected to a single
host phone, you need to connect a power adapter to any one
of the expansion modules.
Ext in Jack
Connects the supplied cord to the Ext jack on the host phone
or to the Ext out jack on the prior expansion module.
LED Instructions
Ext key LED (configured as a line key)
LED Status
Description
Solid green
The line is in conversation.
The line is seized.
Fast flashing green
The line receives an incoming call.
Slow flashing green
The call is placed on hold.
Off
The line is inactive.
Ext key LED (configured as a BLF key)
LED Status
Description
Solid green
The monitored user is idle.
Fast flashing red
The monitored user receives an incoming call.
Solid red
The monitored user is talking.
The monitored user’s conversation is placed on hold
(This LED status requires server support).
The monitored user is dialing.
The call is parked against the monitored user’s phone
number.
Off
The monitored user does not exist.