Bluetooth call output audio not working


We are working Bluetooth call connected with mobile to board(Qualcomm).
Running the below command
1. Setprop persist.service.hfp.client.enable true
2. Setprop true

Pair mobile with unit Bluetooth connected with the media audio and calls.

 Playing video in YouTube and it was routed to the board speaker
  Connected calls, the call in audio was routed but the call audio output was not coming in the unit. Please share the working mixer_paths.xml file to successfully route the audio in and out.