[Bug 1519809] Re: No sound is routed to bluetooth headset after a call

[Simon Fels]

There are two connections for HFP. One is the service level connection
which is used for exchanging AT commands which is setup all the device
the device is connected on HFP even if no call is active. This way we
also accept/decline calls. The second connection is the actual SCO
channel fo sending the audio data which is opened as soon as the
headset_head_unit profile for the PA bluetooth audio card is set.

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https://bugs.launchpad.net/bugs/1519809

Title:
  No sound is routed to bluetooth headset after a call

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