From owner-freebsd-net Thu Apr 27 16:34:50 2000 Delivered-To: freebsd-net@freebsd.org Received: from www.bellnetworks.net (www.bellnetworks.net [208.177.187.234]) by hub.freebsd.org (Postfix) with ESMTP id C0B2237BB5A for ; Thu, 27 Apr 2000 16:34:47 -0700 (PDT) (envelope-from jerry@bellnetworks.net) Received: from itbell (dhcp-247.bellnetworks.net [208.177.187.247]) by www.bellnetworks.net (8.9.3/8.9.3) with SMTP id TAA09673; Thu, 27 Apr 2000 19:34:00 -0400 (EDT) (envelope-from jerry@bellnetworks.net) Message-ID: <001f01bfb0a1$27690340$f7bbb1d0@netrex.com> From: "Jerry Bell" To: "Wes Peters" , "Ryan Thompson" Cc: References: <3908C23B.177C942D@softweyr.com> Subject: Re: Max T1. Throughput? Date: Thu, 27 Apr 2000 19:34:38 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2314.1300 X-Mimeole: Produced By Microsoft MimeOLE V5.00.2314.1300 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Yikes, who is advertising like this? All of the providers in this area (Detroit) sell a 512k SDSL connection as 512k up and down (simutlaneously). Jerry ----- Original Message ----- From: Wes Peters To: Ryan Thompson Cc: Sent: Thursday, April 27, 2000 6:42 PM Subject: Re: Max T1. Throughput? > Ryan Thompson wrote: > > > > Sorry for the slightly off-topic post, here. Couldn't think of a better > > forum to inquire in, though. > > > > There seems to be some confusion around our region on what the maximum > > throughput of a T1 is. (Actually, we are on a 1.544Mbps leased SDSL line > > from a local ISP. The package was sold to us as a burstable T1). > > > > My preliminary tests seem to show a segregation between up and > > down... Each maxing out at about 96KB/sec when the other is practically > > idle. Not the near-198KB/sec that I think I should be getting. > > > > Is SDSL the key, here? Perhaps I took "Synchronous" in the wrong > > way. Does "Synchronous" imply UP = DOWN = 1.54Mbps / 2? > > SDSL is not "Synchronus", it is "Symmetrical", in other words you get > the same bandwidth in both directions, as opposed to Assymmetrical DSL > where (usually) the "download" bandwidth is greater than "upload." > > Most (all?) DSL providers quote the total throughput. If you buy 512K > SDSL, you get 256K up and down. 512K ADSL is usually 384K downstream > and 128K upstream. If you can get 768K bps down and 768K bps up > simultaneously, you're getting exactly what you paid for, even if it > is not what you wanted or expected. > > You should also note that DSL and T1 have nothing to do with each other. > > -- > "Where am I, and what am I doing in this handbasket?" > > Wes Peters Softweyr LLC > wes@softweyr.com http://softweyr.com/ > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message