From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from masada.superduper.net (masada.superduper.net [85.119.82.91]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 9962C3B2A4 for ; Thu, 25 Feb 2021 08:38:39 -0500 (EST) Received: from 52-119-118-48.public.monkeybrains.net ([52.119.118.48] helo=[192.168.131.74]) by masada.superduper.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1lFGqd-0004Fw-O8; Thu, 25 Feb 2021 13:38:32 +0000 From: Simon Barber To: Sina Khanifar CC: Dave Taht , , bloat Date: Thu, 25 Feb 2021 05:38:30 -0800 Message-ID: <177d9698ff0.27a9.e972a4f4d859b00521b2b659602cb2f9@superduper.net> In-Reply-To: References: <177d80af608.27a9.e972a4f4d859b00521b2b659602cb2f9@superduper.net> User-Agent: AquaMail/1.28.1-1760 (build: 102800003) MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----------177d969933732f727a938f18fc" X-Spam-Score: -2.9 (--) Subject: Re: [Bloat] Updated Bufferbloat Test X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Feb 2021 13:38:39 -0000 This is a multi-part message in MIME format. ------------177d969933732f727a938f18fc Content-Type: text/plain; format=flowed; charset="us-ascii" Content-Transfer-Encoding: 8bit The ITU say voice should be <150mS, however in the real world people are a lot more tolerant. A GSM -> GSM phone call is ~350mS, and very few people complain about that. That said the quality of the conversation is affected, and staying under 150mS is better for a fast free flowing conversation. Most people won't have a problem at 600mS and will have a problem at 1000mS. That is for a 2 party voice call. A large group presentation over video can tolerate more, but may have issues with talking over when switching from presenter to questioner for example. Simon ------------177d969933732f727a938f18fc Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
The ITU say voice should be <150mS, however in the rea= l world people are a lot more tolerant. A GSM -> GSM phone call is ~350m= S, and very few people complain about that. That said the quality of the co= nversation is affected, and staying under 150mS is better for a fast free f= lowing conversation. Most people won't have a problem at 600mS and will hav= e a problem at 1000mS. That is for a 2 party voice call. A large group pres= entation over video can tolerate more, but may have issues with talking ove= r when switching from presenter to questioner for example.

Simon
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