Headset Profile (HSP)

• This is the most widespread profile in current use. It allows for cell phones to connect to headsets wirelessly, and gives the headset the ability to control calls. The user can place calls, hang up and adjust volume without touching the phone itself.
  
  

Advanced Audio Distribution Profile (A2DP)

• A2DP is a profile used primarily for listening to music. It allows a device such as an MP3 player to send a high-quality audio stream to a listening device, such as wireless headphones or a wireless speaker system.
  
  

File Transfer Profile (FTP)

• This simple profile allows one device to access files and folders on another device, and to transfer files back and forth between the two devices.
  
  

Hands-Free Profile (HPP)

• This profile is similar to the headset profile, but it is used more often in car kits because it adds extra functionality, including redial, call waiting and voice dialing. HPP allows a user to use a car speakerphone to take a call without ever touching the phone itself.
  
  

Phone Book Access Profile (PBAP)

• This profile allows a remote device (most often a car) to download the phone book on a host device (usually a cell phone). When used in conjunction with the Hands-Free Profile, PBAP allows a car kit to notify the driver of an incoming call as well as the identity of the caller. The driver can then complete the call without ever having to take his hands off the steering wheel.