Hi Johan, 

Here is a patch to change the In-BandRingtone setting through a D-Bus
method. 

Let me know if the Method/Signal names are fine with you. 

Ill send the patch for the audio-api.txt next.

Do you think we shud have a DBus method call to Identify the type of
headset i.e HSP/HFP? A method like "IsHFP" which returns the value of
hs->hfp_active will be useful. Otherwise there is no way to know (apart
for reading /etc/bluetooth/audio.conf) what profile is active. 


Let me know if anything in the patch needs to be changed. 
-Alok.