BLF and conference

[olegsenin]

Hello!
I ask for help. There is a conference in which participate in the example of 20 numbers that are displayed on the extension panel. It is required to turn the microphone off and on the button of the BLF and display the status of the subscriber or not.
When using BLF on the extension panel, pressing a button starts a new call.
It requires only a subset, but there is no light indication.
Is there any solution to the problem?
P.S. sorry for Google translation.