Incoming SCO connection in Bluetooth

I have written a Bluetooth driver to support read/write SCO data. It works fine when I am initiating outgoing SCO connections. But now I want to receive incoming SCO. I have registered my driver by BRB_SCO_REGISTER_SERVER, as it was explained in MSDN’s article “Accepting SCO Connections in a Bluetooth Profile Driver”, but nothing happen! I do not receive ScoIndicationRemoteConnect indications and my registered callback function is not called at all!
May be there are other preconditions exist in order to receive incoming SCO? E.g. the driver should register some records in SDP or must have special GUID when creating device interface (WdfDeviceCreateDeviceInterface)?
Waiting for your advices, any help will be very appreciated.
Thanks