Message-ID: <45511DA6.2000906@xmission.com>
Date: Tue, 07 Nov 2006 16:58:30 -0700
From: Brad Midgley <bmidgley@xmission.com>
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To: BlueZ development <bluez-devel@lists.sourceforge.net>
References: <20060917202558.GG21347@compendium.com.ar>
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Subject: Re: [Bluez-devel] bluetooth dies when trying to use 2 sco links
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Horacio

> Attached you'll find the code for a test program that makes a call using
> the hands-free profile connected to a cell phone and when the call is
> answered it generates echo (so the person who answers the phone will
> hear himself)

I talked with Marcel about this. Here's the current situation:

uart-connected bluetooth adapters can do multiple sco connections
without any trouble.

usb-connected bluetooth adapters suffer from a limitation in the usb
kernel layer... the number of sco connections has to be hardcoded at
boot time in the isoc parameter. If it's set for two 16-bit sco
connections, when more or fewer connections are in use, no audio gets
through. The usb layer needs a rewrite to fix this.

Brad


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