[Slicerman622]

Had this problem as well....Using Sprint stock rom,WM 6.5 with Motorola H17 BT.....Made the following regedit....

[HKEY_LOCAL_MACHINE\Software\WIDCOMM\Plugin\HandsFr ee]
"SupportedFeatures"=dword:000005EF (1519) default was 1383..

After reset, BT announces all calls including custom ringtones...

Found this fix on XDA...