From: Marcel Holtmann <marcel@holtmann.org>
To: Till Harbaum <harbaum@beecon.de>
Cc: BlueZ Mailing List <bluez-devel@lists.sourceforge.net>
Subject: Re: [Bluez-devel] Fighting with SCO
Date: Thu, 26 Aug 2004 19:27:11 +0200 [thread overview]
Message-ID: <1093541231.2581.40.camel@pegasus> (raw)
In-Reply-To: <200408261852.56641.harbaum@beecon.de>
Hi Till,
> i have a BlueTrek G2 bluetooth headset and i am just unable to get
> it work with bluez.
>
> I can connect to it with hstool and it even sends me the AT+VGS-Volume
> commands and AT+CKPD=200 whenever i press the button. And if i send RING to
> it, then it rings.
>
> But it won't send me any sco data. I have tested this with several different
> usb dongles (d-link dbt-120, the microsoft dongle delivered with the
> bluetooth desktop (both csr) and a Allnet WBT-3021 (broadcom chip)).
>
> If i make scotest send some funny patterns to the headset i get some very
> quiet hissing like some audio transmitter has been switched on, but no actual
> audio signal is being transmitted.
actually I don't expect that the Broadcom device will work. Even if they
say that SCO over HCI is supported it behaves somekind of weird with
some USB host controller chips. All your devices should set to SCO over
HCI by default, but you may check this with "hciconfig hci0 revision".
According to the Headset profile I think the SCO channel must be
established by the audio gateway after some command was sent. Or after
you received an OK. I only tested the hstest program with a HBH-10 and
the Bluespoon analog/digital. Run "hcidump -x" and check if there is
something special on the link.
> BTW: Marcel: The l2cap buffer management student thesis is out ...
This is great. Please inform me about the results.
Regards
Marcel
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next prev parent reply other threads:[~2004-08-26 17:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-26 16:52 [Bluez-devel] Fighting with SCO Till Harbaum
2004-08-26 17:27 ` Marcel Holtmann [this message]
2004-08-26 18:00 ` Till Harbaum
2004-08-26 19:23 ` Marcel Holtmann
2004-08-26 20:29 ` Till Harbaum
2004-08-26 20:36 ` Marcel Holtmann
2004-08-27 10:21 ` Till Harbaum
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