Hi All, >> Did you load module-bluetooth-discover with headset=ofono as argument? >> Normally this should be sufficient to make it work. When the connection >> is established, > Yes, module-bluetooth-discover is loaded, also tried with "ofono" and "auto" arguments, but nothing till now. >> pulseaudio automatically loads loopback modules for the phone. You might >> have to check if the modules have the correct source / sink. > Could you please provide further more details regrading the source sink setup. >> Additionally to observing the log files, you can debug what is going on >> by using dbus-monitor to see the messages on the dbus. Thanks, SCO transport is working now, even though i cant hear anything on headset sco traffic is visible via btmon during phone call.The issues were, * The build system(Yocto) was not properly enabling the ofono backend for pulseaudio, took some time to identify this. * Configured default.pa with proper module name name(module-bluez5-discover) and arguments * device, module and card restore modules are causing issues, so disabled it !! Currently trying to change volume with alsamixer is giving following message, alsa-plugins-1.0.29/pulse/pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused cannot open mixer: Connection refused ~ Best Regards, John J