[maemo-users] Bluetooth headphones and mp3's

From: Brad Midgley bmidgley at gmail.com
Date: Wed Sep 26 22:04:27 EEST 2007

Even without avrcp, a combo headset should pause the a2dp stream when
taking a voice call. The underlying avdtp protocol has messages for
stream suspend.

btw, the a2dpd and bluetooth-alsa stuff is an experiment. If you can
afford to upgrade bluez-utils, you'll find a new audio service there
that is the one being worked on. This may be a little too bleeding
edge since it will require a new bluez-libs and might impact some
other stuff.

I haven't heard these HSP/HFP/A2DP headsets being called "multipoint"
before but I've been calling them "combo" sets. The interesting thing
here is the set prefers to be master on both its active connections so
it can communicate with separate hifi and voice devices in a single


On 9/26/07, Simon Pickering <S.G.Pickering at bath.ac.uk> wrote:
> >> Do you know if the headsets have some priority between the devices, so
> >> that I will hear the person calling in my headphones and not the music,
> >> or will I hear both?
> >> > I think you need to look for the feature known as "multipoint". This
> >> > allows the headphones to pair and be actively connected to two devices
> >> > at the same time - your N800/mp3 player and your phone. These are a bit
> >> > more expensive than the normal Bluetooth stereo headphones, which can
> >> > only connect with one device at a time.
> >> >
> >
> > The Jabra bt620 headphones I have work like you are asking.  I can pair with
> > both my nokia and my cell phone at the same time.  The phone takes priority
> > when a call comes in, then I drop back to music.
> >
> > Some phones ring only in the headphone, mine (nokia 6103) rings both
> > places in
> > case I am headphone enabled but not stuck in my ear.
> >
> I've never used one of these multipoint headsets so see the reply
> above. I imagine it may also be possible with some headsets that you
> need to click a button to confirm that you want to take the call.
> Does the music pause while you're on the call? Again this would be
> implementation dependent (implementation of the headset) but should
> work as these a2dp headsets support AVRCP too (Audio/Video Remote
> Control Profile).
> With that said, I'm not sure whether the N800's a2dp implementation
> implements/supports AVRCP so it may not pause the music. Anyone noticed?
> Simon
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