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Synchronous Connection-Oriented (SCO) Link
https://www.tutorialspoint.com/synchronous-connection-oriented-sco-link#:~:text=A%20SCO%20link%20can%20transmit%20a%2064%2C000%20bps,is%20not%20feasible%20to%20retransmit%20real-time%20voice%20data.
Synchronous Connection-Oriented (SCO) Link
https://www.tutorialspoint.com/synchronous-connection-oriented-sco-link
A SCO link can transmit a 64,000 bps (bits per second) PCM audio channel. SCO frames are not retransmitted. This is because the transmission is time critical and it is not feasible to retransmit real-time voice data. Since retransmission is not possible, forward error correction is the only error correcting option for transmission of reliable data.
Synchronous Connection - an overview | ScienceDirect …
https://www.sciencedirect.com/topics/engineering/synchronous-connection
The audio data is carried on SCO channels, and to establish a SCO channel, you must first set up an ACL (data) channel. This is because the ACL channel is used by the Link Manager to send control messages to set up and manage the SCO channel. SCO channels use prereserved slots; reservation of slots ensures the integrity of the SCO packet.
Bluetooth SCO in Android - Bits & Qubits
http://gopinaths.gitlab.io/post/bluetooth_sco_android/
Bluetooth SCO is used in Bluetooth Headset profile or Handsfree profile (BT HSP/HFP). In general, the audio data transferred over the SCO channel can be provided via the normal Host Controller Interface (HCI) hardware driver or via a PCM back-channel. But Voice over HCI is not recommend since it will have a poor quality.
Understanding Bluetooth® Wireless Audio - Plugable ...
https://kb.plugable.com/bluetooth/understanding-bluetooth-wireless-audio
Classic Bluetooth has two types of data channels: Synchronous Communication Oriented links (SCO) for audio, and Asynchronous Communications Links (ACL) for data. Bluetooth BR/EDR technology supports a maximum of …
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