Date: Wed, 03 May 2000 00:21:01 -0400 From: "Louis A. Mamakos" <louie@TransSys.COM> To: Wes Peters <wes@softweyr.com> Cc: Bill Fumerola <billf@chc-chimes.com>, Ryan Thompson <ryan@sasknow.com>, freebsd-net@FreeBSD.ORG Subject: Re: Max T1. Throughput? Message-ID: <200005030421.AAA27877@whizzo.transsys.com> In-Reply-To: Your message of "Tue, 02 May 2000 00:36:45 MDT." <390E777D.FBBFBC6D@softweyr.com> References: <Pine.BSF.4.21.0004241805280.42785-100000@ren.sasknow.com> <3908C23B.177C942D@softweyr.com> <20000427184630.B40387@jade.chc-chimes.com> <390E777D.FBBFBC6D@softweyr.com>
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> Bill Fumerola wrote: > > > > On Thu, Apr 27, 2000 at 04:42:03PM -0600, Wes Peters wrote: > > > > > You should also note that DSL and T1 have nothing to do with each other. > > > > Ameritech recently delivered a DS-1 to a friend of mine in the form of DSL > > to his location and a device to give a ds-1 signal through the DSL. > > > > TELCO ----DSL---> MAGIC-DEVICE ---DS-1--> DS1 equipment > > > > The magic device was actually at his house. > > That magic device would be a... switch! I can show you how to do the > same with Frame Relay, ATM of any flavor, Ethernet at 10/100/1000 mbps, > Token Ring at 4 and 16 mbps, FDDI, CDDI, and just about anything else > you'd care to name, all in the same chassis. Nope, not in the case cited. It's become very popular for a local exchange carrier to provision a T-1 service (e.g, the framing, etc.) by using HDSL loop technology because it required fewer repeaters, is less demanding on binder group selection, and coexists with more services in a cable binder group than a normal T-1 does. I have just such a device screwed to the wall in my house, with an 2-pair HDSL connection coming in one end, and a T-1 signal coming out the other that plugs into a Cisco 2524 with built in CSU/DSU. > Repeat after me: DSL is ATM over copper wire. Nothing more, nothing > less, nothing magic. Yes, commonly ADSL services are provisioned simply to do ATM cell transport. Many SDSL services are provisioned to carry Frame Relay packets, rather than cells; if it's a Copper Mountain DSLAM, you can depend on it. louie To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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