On 09.10.2016 20:38, Marco Trapanese wrote: > Hi! > > I wonder how to select "on-the-fly" the audio input source for HFP calls. > My system is: Raspian Jessie Lite, BlueZ 5.40, pulseaudio 8.0, ofono > 1.18 with an USB/BT dongle. > > When I make or receive a call, I would like to select whether to use > the local USB microphone or the smartphone one. > Please, would you help me to understand how to achieve these settings? Ups, sorry, misread your mail. You can't use the smartphone microphone the way I described in my last mail. I think this is not possible because once you have the bluetooth connection it is expected that the input comes from the PC. This is part of the HFP/HSP protocol.