What are the Basics of Bluetooth Technology?

What happens when you Pair two Bluetooth Devices

In order for two Bluetooth devices to communicate, they must be introduced to each other.  This initial introduction is called Pairing.  To pair two devices you must activate the PAIR button on each device.

 The Pairing Procedure

Seeing

In order to pair, the two Bluetooth devices must be able to see each other.  The maximum distance between the two devices is approximately 30 feet.  Beyond that distance, the devices will not be able to communicate.  

 

Discoverable

When you activate the PAIR buttons, both devices become discoverable.  When a device is discoverable it will answer inquiries made by another device which is acting as the master device.  The devices will exchange their Bluetooth addresses, their device types, their friendly names and the services each can provide. 

 

Master and Slave Devices

 When they are pairing, if one of the devices, called the master device, determines that the other device is the right type, it will remember the other device's address, connect with and begin to share information with it.  The second device is called the slave device.

 The master device initiates the relationship by sending inquiries to another Bluetooth device to see if pairing is possible.

 The slave device accepts the offer to pair and connect from the master device. 

 The PRC Bluetooth Switch acts as a slave device when it connects with an AAC device.  The AAC device is the master.

 The PRC Bluetooth switch acts as a master device when it connects to the PRC Bluetooth Adapter. The adapter is the slave device.

 

Connected

When two Bluetooth devices are connected, they are both ON, they have been paired, they can see each other and they can begin to share information.