25 Jul
2004
25 Jul
'04
10:48 p.m.
Patrick Kaell a écrit :
I know. I give examples I know about. I worked on Siemens and Eltrona
networks about multicast issues and modulation schemes.
10% of 10% of 25 000 is 250. 24 Mb/s divided by 250 is 100 Kb/s. Those
are optimistic assumptions. So to deliver 1 Mb/s service, the cable-tv
operator should sacrify 10 TV channels... They won't.
Did somebody had news about a DSL provider limited by the amount of his
customers ?
Let's
consider the Esch-sur-Alzette network. There is a single cable
Which is not Coditel operated.
head-end for
the city and surrounding areas. The same signal is thus
delivered to the 25000 homes connected. If you say 10% only of the
subscribers will apply for Internet services, and that 10% only will
be connected at the same time, it gives you 250 users sharing the
same bandwidth. The bandwidth of a cable-TV channel thanks its
advanced modulation scheme is about 24 Mb/s max, leading to 100 Kb/s
per sacrified TV channel. And the problem is even worse at return path
I have a problem following this calculation. 10% of 25000 is 2500
leaving only 10Kb/s according your calculation ;-) long as your
cable-TV provider is not too successfull, OK, it's
working. Let see what will happend in some years.
The same thing that will happen to an ADSL provider. Either their
investments follow the increased utilization or not. People want a service. ADSL is only a technology. The
technology
doesn't matter to the customer.
Indeed. And I have no chance to have cable-tv based Internet access in
the area I'm living.
Cable access is by no ways inferior to ADSL.
I don't care. I just gave an information about DSL flat rate services in
Luxembourg, and I have no ways to compare with cable-tv where I live.
Am am glad for you that you have never experienced a
network problem
with Alternet. [...] But this also means that you have no experience
with the helpdesk and that you are not able to answer my questions.
Simply say: I do not know how they handle this, because I never
experienced a problem. This serves energy ;-)
I discussed directly with them not as customer but as business partner
and as IT advisor. I don't need to have a network problem to chat with
those guys.
--
Brent Frère
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