[pulseaudio-discuss] Select audio input for HFP calls

[Marco Trapanese]

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?

Thanks
Marco