Return-Path: From: Marcel Holtmann To: BlueZ development In-Reply-To: References: <4A619A8D-9BE8-4082-B28E-4F3EC19A6546@holtmann.org> Date: Mon, 18 Aug 2008 07:10:41 +0200 Message-Id: <1219036241.7591.15.camel@violet.holtmann.net> Mime-Version: 1.0 Subject: Re: [Bluez-devel] How to know the packet loss ratio of SCO socket Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi, > > SCO are voice connections and they are CVSD encoded. It is not a > > reliable data transport. Use L2CAP or RFCOMM for that. > > I think you are right. > My original purpose is to test the voice quality when 12 SCO server-client pairs > are running in the same room (which means 12 small piconets contending the > channel, although each pair has its own frequency hopping pattern). > > Is there any good way to gather the voice quality information? (actually I don't > know how to tell a voice qualify is "acceptable" to human ears. is there any > good references?) I have no idea. However you will see interference if the devices are close. SCO consumes a fixed amount bandwidth. Regards Marcel ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel