Why call audio not transferred to PC when making calls with Handsfree profile?

[PongManao]

I'm a newby for bluetooth integration.
I'm trying to build a simple windows form application that connect bluetooth with an Android phone.
I can connect the bluetooth using the handsfree profile and can send AT commands to make a call and answer a call but the problem is that the call audio is not transferred to my PC.

I built my windows app based on the project "MyPhone.Demo.HFP" under "MyPhone.Demo" solution.

Can you guys explain me why and how can I solve this?

[aryaveer2411]

@PongManao HFP.cs only makes service level connection. To transfer audio SCO connection is required and there is no documentation related to SCO connection from microsoft