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<blockquote data-quote="MacInWin" data-source="post: 1916011" data-attributes="member: 396914">Bluetooth has two kinds of devices. One is a Main device, and the other is the Follower. From:[URL unfurl=&quot;true&quot;]https://en.wikipedia.org/wiki/Bluetooth[/URL]Both the Main and Follower transmit and receive. That is how they negotiate a connection. The headset, for example, transmits an &quot;I'm here&quot; signal that is received by the phone. The Phone then transmits a &quot;let's talk&quot; signal to the headset and they then swap information about protocols, addresses, etc. Both of them transmit and receive during that process. At some point they finalize the pairing and the agreed audio is transmitted from the phone to the headset. The headset also transmits the agreed signals back to the phone to pause the play, adjust volume, answer the phone when it rings, etc, etc. So, both devices transmit and receive. All BT devices do that. But good luck with your device, whatever it is. You didn't answer the question. Maybe somebody else can help you.</blockquote>

[QUOTE="MacInWin, post: 1916011, member: 396914"] Bluetooth has two kinds of devices. One is a Main device, and the other is the Follower. From: [URL unfurl="true"]https://en.wikipedia.org/wiki/Bluetooth[/URL] Both the Main and Follower transmit and receive. That is how they negotiate a connection. The headset, for example, transmits an "I'm here" signal that is received by the phone. The Phone then transmits a "let's talk" signal to the headset and they then swap information about protocols, addresses, etc. Both of them transmit and receive during that process. At some point they finalize the pairing and the agreed audio is transmitted from the phone to the headset. The headset also transmits the agreed signals back to the phone to pause the play, adjust volume, answer the phone when it rings, etc, etc. So, both devices transmit and receive. All BT devices do that. But good luck with your device, whatever it is. You didn't answer the question. Maybe somebody else can help you. [/QUOTE]

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