Android Bluetooth protocol noun explanation OPP HFP HDP A2DP PAN

the full name of the various Bluetooth protocols:

OPP: Object Storage Specification (objects Push profile), most commonly, the transfer of files is using this protocol.

HFP: (Hands-free profile), so that Bluetooth devices can control the phone, such as answer, hang up, reject, voice dialing, etc., rejected, voice dialing to see whether Bluetooth headset and phone support.

HDP:HDP (Health device profile) Bluetooth medical device mode can create Bluetooth-enabled medical devices, applications that use Bluetooth communication, such as heart rate monitors, blood, thermometers, and scales.

a2dp:advanced Audio Distribution Profile (A2DP) advanced voice transmission mode A2DP is capable of using the chip inside the headset to stack data to achieve high-definition sound. The headset with A2DP is a Bluetooth stereo headset.

PAN: The latest personal LAN (Personal area Network) to meet demand, in a small area can be personal devices (their own mobile phone notebook, etc.) connected network.