From: "Michael A. Terrell"
Subject: Re: Cable Modem Question
Date: Mon, 09 Sep 2002 20:23:38 -0400
Organization: I'm trying!
X-Mailer: Mozilla 4.61 [en]C-CCK-MCD (Win95; U)
Tony Pelliccio wrote:
> In article ,
> md_cola@even_link.net says...
> > Ok Tony, I got questions (either you work for Cox or those modems give
> > up more info than most customers need). I'm planning on getting one and
> > a friend claims to get 800kbps up and down. Now when you say 2.560 Msym
> > upstream rate at 26192000 Hz, I'm figuring one byte per symbol for 256
> > QAM and all this sounds right. Is there error correction in the physical
> > layer or is that still done furthur up the TCP/IP stack? What kind of
> > compression is used? The 2.560 Msym up is shared by all the customers on
> > the node, correct? So my friends slice is 800kbps. How many houses are
> > passed in the node in this (Cox) system?
> That's how they get the speed - using QAM.
> > If your info came from the connection status, I'd like to know how you
> > got it so I can talk my friend thru that for a comparison.
> > Did I ask enough questions of my own in Jim's thread? Thanks for opening
> > it up, Jim.
> If you've got a SB-3100 or similar open a web browser to 192.168.100.1
Cable modems use FQPSK, not QAM.
An old fart since August 5th, 2002!
Michael A. Terrell
Check out my web site and tell me what you think.
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