1) Connect bluetooth dongle.

   usb \  usb_endpoint  \   usb   \  usb_endpoint  \  usb_endpoint  \  usb_endpoint  \
	1-1 / usbdev1.3_ep00 / 1-1:1.0 / usbdev1.3_ep81 / usbdev1.3_ep82 / usbdev1.3_ep02 /
         -------+------                                               -------+------
                !                                                            !
                +-------------- announce device discovery                    !
                                                                             !
                                     load rfcomm ----------------------------+

     usb   \  usb_endpoint  \  usb_endpoint  \
   1-1:1.1 / usbdev1.3_ep83 / usbdev1.3_ep03 /

     usb   \  usb_endpoint  \  usb_endpoint  \
   1-1:1.2 / usbdev1.3_ep84 / usbdev1.3_ep04 /

     usb   \ usb_device
   1-1:1.3 /  usbdev1.3

   usbdev1.3_ep02/device/modalias
   usb:v050Dp0012d0000dcE0dsc01dp01icFFiscFFipFF

	alias usb:v*p*d*dcE0dsc01dp01ic*isc*ip* rfcomm

2) Load rfcomm module.

     module  \  platform \ module \ module
   bluetooth / bluetooth /  l2cap / rfcomm