Profile found in Bluetooth will describe how technology used. Profile can be best
described as vertical slices through the protocol stack. Will determine the options in each protocol
mandatory for the profile.

Profile will also define the parameter ranges for each protocol. The concept of this profile used to reduce the risk of interoperability problems between different products. This akan profile usually does not set any additional
the Bluetooth specification, which is the reason you add a new profile where you need it. The
Bluetooth technology is the same, only specific methods used are defined.

In general, all profiles that are currently based on GAP (Generic Access Profile). There 9 the profile that will fall in the category GAP, and them below:
1. AVRCP – Audio / Video Remote Control Profile
2. ESDP – Extended Service Discovery Profile
3. CIP – Common ISDN Access Profile
4. PAN – Public Area Network Profile
5. HCRP – hardcopy Cable Replacement Profile
6. GAVDP – Generic Audio / Visual Distribution Profile
7. A2DP – Advanced Audio Distribution Profile
8. VDP – Video Distribution Profile
9. HID – Human Interface Device Profile

To put it another way, will explain the use of model Bluetooth devices and applications associated
profile is used. Use of the model focuses mainly on three categories – voice / data access points, peripheral interconnects, and PAN (Personal Area Network).

With this technique, the device will use 79 individuals, selected randomly with the frequency
designated range, the switch from one another regularly.

In the case of Bluetooth, the transmitters akan change frequency 1,600 times or more each second, meaning that more devices can make full the use of radio spectrum. Since each transmitter of Bluetooth will use spread spectrum
automatically, it is very unlikely that two akan transmitters on the same frequency in
exactly the same.

When Bluetooth devices come in a range close of each other, an electronic conversation akan
to determine whether they do not have to share data or whether one should take the total control. Users do not have the key to press or give the command – as a conversation akan happen automatically.

After the conversation has occurred, the device will form a network. Bluetooth devices akan create a PAN (Personal Area Network) or piconet that can fill the space. After piconet has defined, the devices will randomly hop in
frequency.