Bluetooth is a technology, where devices communicate wirelessly to transfer data at 720 kbps within 10-100 meters range. When devices come in each other's radio range their link managers discover each other, Link Management Protocol(LMP) engages in message exchanges. LMP does link setup and checks packet size for data transmission. Bluetooth global ID is exchanges between the devices and their profiles are matched and connection is set up.
Bluetooth signals uses frequency hopping and avoids interference with other signals by hopping to a new frequency after the transmission of every packet.
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