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Non-Tech : Amati investors
AMTX 1.600-1.8%Jan 9 9:30 AM EST

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To: Phil who wrote (17711)5/15/1997 1:08:00 PM
From: Andreas Helke   of 31386
 
[xDSL Speed]

ADSL is fast compared to just about anything. The only service that its downstream bandwith can not handle is HDTV video streams. And there the almost 10 times faster VDSL comes to the rescue. As soon as you have ADSL the bottlenecks will imediately move to the backbone network and to the servers. The current network cannot handle a few thousend or million users who really use the capacity of their ADSL modems. Gilders fast optical lines will be needed to take care of that.

A speed comparison:

analog modem: 0.028 to 0.056 Mbit/s
ISDN 2 basic rate channels 0.128 Mbit/s (what you would consider if you get ISDN service from your phone company)
ISDN primary rate 1.5 to 2 Mbit/s
T1 connection 1.5 Mbit/s
T3 connection 30 Mbit/s
ADSL 1.5 to 8 Mbit/s downstream (upstream 0.064 to 1 Mbit/s)
VDSL 12 to 50 Mbit/s downsream

Andreas
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