From owner-freebsd-questions Sun Feb 24 15:49:44 2002 Delivered-To: freebsd-questions@freebsd.org Received: from draco.over-yonder.net (draco.over-yonder.net [198.78.58.61]) by hub.freebsd.org (Postfix) with ESMTP id 4042337B402 for ; Sun, 24 Feb 2002 15:49:37 -0800 (PST) Received: by draco.over-yonder.net (Postfix, from userid 100) id D6411FC2; Sun, 24 Feb 2002 17:49:36 -0600 (CST) Date: Sun, 24 Feb 2002 17:49:36 -0600 From: "Matthew D. Fuller" To: Joe & Fhe Barbish Cc: "Maren S. Leizaola" , FBSDQ , Rod Person Subject: Re: SQUEEEZING the most bandwidth out of a 33.6 modem Message-ID: <20020224174936.F47910@over-yonder.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5-fullermd.1i In-Reply-To: ; from barbish@a1poweruser.com on Sun, Feb 24, 2002 at 11:42:42AM -0500 X-Editor: vi X-OS: FreeBSD Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Feb 24, 2002 at 11:42:42AM -0500 I heard the voice of Joe & Fhe Barbish, and lo! it spake thus: > > | The connection speed using a 56k enabled modem is a function of > | phone line conditions and speed of PC (cpu mhz & bus mhz). It's only a function of the CPU speed if you have a POS software modem. And unless you've got a 286 around, the bus speed won't be your bottleneck either. And there is NOTHING keeping you from connection V.90 at 56000 baud; the 53k limit is a X2 limitation, and I haven't seen anybody using X2 in years. > Question? Shouldn't V.90 modems be able to negotiate a speed fall forward > if the link quality is there? Or did they forget to put that in the > standard? In theory, it's in there. In practice, *VERY* few modems will even attempt it. > of each individual phone circuit vary greatly. If the circuit is so poor > when you dial in to your ISP that you only get connected at 48000 the likely > hood of it getting better during it's use life time is very unlikely to > none. By setting s38 to some minimum value the modem hardware will hangup If clean 48000 baud connections qualify as "only", I'd love to know what sort of telco YOU'RE working with... -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Unix Systems Administrator | fullermd@futuresouth.com Specializing in FreeBSD | http://www.over-yonder.net/ "The only reason I'm burning my candle at both ends, is because I haven't figured out how to light the middle yet" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message