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Bluetooth - definition

 

Bluetooth is a wireless protocol for exchanging data over short distances from fixed and mobile devices, creating personal area networks.

 

There are two important parameters of Bluetooth devices - class and supported profiles.

 

"Class" signifies the distance at which a Bluetooth connection is possible. Most mobile devices are Class 2, which means they have a range of up to 10 m. Class 1 devices are rare and have a range of up to 100 feet.

 

A "profile" is a type of Bluetooth connection. The most common are the Headset (HSP) and Handsfree (HFP) profiles that enable the device to connect to a wireless headset or handsfree.

 

Some other profiles are OBEX (OBject EXchange) which allows transfer of files, contacts and events; A2DP, which adds support for streaming of stereo sound and AVRC, which allows remote control of playback.

 

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2G | 3.5mm Headphone Jack | 3G | 4G | 5G | 802.11 |

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