How to run ofono as backend for a headset?

[Peter Nabbefeld <peter.nabbefeld@xxxxxx>]

Hello,

due to 
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#index35h3 
I should get HSP/HFP support using ofono as a backend and setting 
headset="ofono", but it doesn't work.

I've already started ofono using "systemctl restart ofono" and 
started/stopped pulseaudio, but it displays "HSP/HFP unavailable".

Is there any documentation about how to connect a bluetooth headset 
using ofono?

Kind regards
Peter