edit: you may also have a look at files in /etc/bluetooth directory. in /etc/bluetooth/audio.conf there is line saying: Code: HFP=true , if you're not afraid of experimenting you may try to set it to false to disable HFP. But I don't have any idea how to disable HSP unfortunately. You could add "audio" to "DisablePlugins" line in /etc/bluetooth/main.conf, but it may disable also a2dp/avrcp...
HFP=true
Disable=Headset,Gateway