Hi Hilda, > I'm a little confused about this. > Did you mean that if use existing MSFT/AOSP extensions vendor cmd/event to check device has this feature. > This way is not meeting your conception, a simple way to tell which RTL device supports the MSFT or AOSP extensions? issuing a HCI command and checking HCI command not supported error is not a good design. The Bluetooth Core spec doesn’t use that kind of design. It has supported features and supported commands. And so should any vendor extension. Regards Marcel
