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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here
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To: Tom Eames who wrote (296)10/4/1996 1:19:00 AM
From: Ray Jensen   of 12823
 
Tom, since copper pairs are typically are in much worse condition beyond the feeder plant. For any kind of DSL, distribution pairs will be a big challenge. They are getting in worse condition with each passing year in most telcos. Next time you see a cable splicer or an installer, ask them about the condition of the copper pairs that they work with. Telcos simply are not replacing deteriorated copper plant at the rate that was occuring in the 70s and 80s, because they are holding out for the miracle of a full service network to come along. (Unfortunately, that is not happening yet either). For every year that DSL systems are delayed to market, the condition of the copper pairs gets worse, further limiting their viability in the real world. Time is therefore critical to the success of DSL.

In spite of my critical view on this item, I agree that VDSL via fiber fed digital loop carrier onto a short (1 - 2 km.) copper loop would be much more viable than ADSL served on a copper pair direct from the central office. Won't the many existing brands of fiber-fed digital loop carrier systems need VDSL circuit packs developed? Will VDSL circuit packs be compatible with the huge embedded base of fiber fed digital loop carrier systems? If yes, that is good if available in the next 12 to 18 months. How far away are these from widespread commercial availability vs. laboratory or field trials? Thanks again, Ray J.
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