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Non-Tech : Amati investors
AMTX 1.600-2.7%3:59 PM EST
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To: Charles Carson who wrote (21043)7/9/1997 1:59:00 PM
From: Rar   of 31386
 
Not to butt in but on the DSL vs. Cable front the fact that Cable
vendors say there is more bandwidth is pure marketing BS. Cable
modems can push 30Mbps over their infrastructure. Currently and
near future (including the cable modem generation) cable networks
are not only insufficient to provide bidirectional throughput but
they also *share* that 30Mbps across however many homes they
deliver to within a group (typically 200-5000 homes).
Unlike Ethernet however, there is an asymmetric upstream at about
3-5Mbps at best per individual home.

Also unlike Ethernet the 30Mbps downlink will probably be used for
broadcast digital TV service in the future which will easily use
up the entire 30Mbps spectrum. They will possibly leave a smaller
several Megabit per second channel available for data networks.

Now for DSL, ADSL is only the start, we are already designing
infrastructure projects for business and residential parks which
will support a VDSL infrastructure. That's 52Mbps per home downstream
and 640k-10Mbps upstream. With VDSL you can deploy digital tv at
full HDTV rates (up to 1920x1280 @ 60fps); not only that but the
individual topology will allow direct full VoD to individual homes.
Cable can only provide Near-tine VoD at best and unless they improve
the technology even more will not be able to do full HDTV rates.
For important concern to everyone, all US TV signals by 2006 should
be converted to digital and estimated 2008 when the FCC will sell
the current analog TV spectrum just like they did PCS. There is
no going back.
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