Mute (not pending) a caller during a call I want to use conference mode for calls in a webradio. But i need to control who can speak, i can't find a way to mute a participant who should be cut to let others speak.

So, there is no way to mute someone during a call ?

I know pending but it's not that i want (caller can't hear the radio with pending).
You may need to look for a third party app like this one: 

Voxeet Conferencing

(the one not based on regular phone call are the more versatile)