With firmware version 22.214.171.124, a new feature has been introduced. Idle extensions monitored on a Line key (keytype BLF) can now be shown with the LED turned on green.
This is controlled by the settings
Is this example we are adding the value idle to the setting led_on using an HTTP request to the phone itself. Of course, this also could be set by auto-provisioning.
also we would need to add idle to led_green:
Please check all changes has been correctly submitted entering on :
where phone_ip is your phone ip address.
You will see something like this:
Once you have applied changes pressing Save . You will change behavior as shown: