Date: Tue, 25 Apr 2000 07:59:46 -0400 From: "Jerry Bell" <jerry@bellnetworks.net> To: "HyunSeog Ryu" <r.hyunseog@ieee.org>, "Daniel J. Zaccariello" <marisombra@mindspring.com> Cc: "Ryan Thompson" <ryan@sasknow.com>, <freebsd-net@FreeBSD.ORG> Subject: Re: Max T1. Throughput? Message-ID: <003f01bfaead$c04e10a0$f7bbb1d0@netrex.com> References: <Pine.BSF.4.21.0004241805280.42785-100000@ren.sasknow.com> <4.3.2.20000425005848.045f38e0@pop.mindspring.com> <39054FA3.B947CBD6@ieee.org>
next in thread | previous in thread | raw e-mail | index | archive | help
You are correct. SDSL is the single pair form of HDSL. I just did a few tests on my 384k sdsl, ftp'ing a large file in and out simultaneously and was getting ~48k bytes/s in each direction, at the same time. Jerry ----- Original Message ----- From: HyunSeog Ryu <r.hyunseog@ieee.org> To: Daniel J. Zaccariello <marisombra@mindspring.com> Cc: Jerry Bell <jerry@bellnetworks.net>; Ryan Thompson <ryan@sasknow.com>; <freebsd-net@FreeBSD.ORG> Sent: Tuesday, April 25, 2000 3:56 AM Subject: Re: Max T1. Throughput? > > Hmmm.... > Isn't it that SDSL is one pair version of HDSL? ;> > HDSL use two pairs for transmission. > Am I wrong? ;> > > Hyun > > > "Daniel J. Zaccariello" wrote: > > > > Greets, > > > > In SDSL, the synchronous doesn't mean full duplex. You have a line speed > > of 1.5Mbps up and down, but not 1.5Mbps up and down at the same time. For > > this you'd need something like HDSL (there may be another *dsl that can do > > this). > > > > At 04/24/2000 09:35 PM Monday, Jerry Bell wrote: > > >SDSL does mean that you should get the line speed (1.5Mbps in this case) in > > >both directions. Typically, there is a bit more protocol overhead with > > >sdsl, since it is usually run via atm. > > > > <snipped> > > > > >Good luck, > > > > > >Jerry > > > > > >----- Original Message ----- > > >From: Ryan Thompson <ryan@sasknow.com> > > >To: <freebsd-net@FreeBSD.ORG> > > >Sent: Monday, April 24, 2000 8:06 PM > > >Subject: Max T1. Throughput? > > > > > > > > > > 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? > > > > > > > > Thanks, > > > > - Ryan > > > > > > > > > > > > -- > > > > Ryan Thompson <ryan@sasknow.com> > > > > Systems Administrator, Accounts > > > > Phone: +1 (306) 664-1161 > > > > > > > > SaskNow Technologies http://www.sasknow.com > > > > #106-380 3120 8th St E Saskatoon, SK S7H 0W2 > > > > > > > > > > > > > > > > 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 > > > > 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?003f01bfaead$c04e10a0$f7bbb1d0>