This API is available on Firefox OS for internal applications only.
Summary
The connectSco method is used to allow the device to enable the SCO connection to broadcast and listen to audio to/from the remote devices it is connected to.
Syntax
var request = instanceOfBluetoothAdapter.connectSco();
Returns
A DOMRequest object to handle the success or error of the operation.
Specification
Not part of any specification yet. It should be discussed as part of the W3C's System Applications Working Group.