title: How to know whether a Bluetooth dongle supports the Serial Port Profile (SPP) in WinXP SP3?
body: <p>I am using a USB Bluetooth dongle in a WinXP SP3 environment. I assume that the Bluetooth dongle is recognized by the default Bluetooth Stack (The Bluetooth icon appears in the bottom right corner). </p>
  
  <p>I want to know that how could I list the services supported by the Bluetooth dongle (or by the WinXP Bluetooth Stack) ? How could I know whether the Serial Port Profile (SPP) is supported or not ? </p>
  
  <p>Moreover, as I am not very familiar with the Bluetooth protocol, I want to know that is the SPP service a feature supported by the WinXP Bluetooth Stack ? or a feature supported by the firmware in the Bluetooth dongle ? (i.e. with the same Bluetooth dongle, this SPP service may appear when I am using a certain Bluetooth Stack and may disappear when I am using another Bluetooth Stack.)</p>
  
  <p>Thanks for any pointer or suggestion.</p>