Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!usc!bbn!spdcc!eli
From: eli@spdcc.COM (Steve Elias)
Newsgroups: comp.dcom.lans
Subject: Re: broadband high speed networking between buildings
Message-ID: <4619@ursa-major.SPDCC.COM>
Date: 19 Sep 89 18:14:31 GMT
References: <2440@dogie.macc.wisc.edu>
Reply-To: eli@ursa-major.spdcc.COM (Steve Elias)
Lines: 19


 (Rusty Smith, MACC) writes:
>We have a large broadband system here. There are four trunks and the
>longest is a cascade of 15 amplifiers. We have approxiamately 40 
>Chipcom ethermodems on our network. The use 18 MHz of bandwidth, which
>is 3 t.v. channels. This is not much bandwidth for a cable t.v. 
>system. The problem with the Chipcoms is that they are "dumb" devices
>with no way to manage or find when they drift and go into high errors.

	i can't comment on future products.  as for current products:
	our Marathon bridge is manageable and can couple distant ethernets
	via broadband cable -- though it uses MAP channel allocations, 
	which overlap other commonly used frequencies...  as for the 
	18 MHz for Ethermodems -- i believe Chipcom offers a 12 MHz version.

-- 
 ... Steve Elias (eli@spdcc.com);6178906844;6179325598; {}
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