Neither oFono nor BlueZ will enable the plugins for HFP support unless
DBus-1.3 is installed (or alternatively a hacked dbus-1.2 with file
descriptor passing support)
That explains a lot.
If you want this, then you will need to eventually write your own
that will manage the RFCOMM and SCO sockets. Today, BlueZ does this
I will look into that then. Thanks a lot for the response. This puts me back
in the right track.