|
PureBytes Links
Trading Reference Links
|
This is taken from the Comcastonline.com web site's FAQ re: DSL Vs Cable.
FWIW Comcast is a cable company.
I've heard that DSL is a dedicated line and cable is a shared line, what
about that?
That is partially true. Cable lines are shared within a neighborhood and if
a number of subscribers in the same neighborhood all ask to download files
at the same time, performance will be slowed. What the DSL folks are not
telling you is that while DSL subscribers do not share the line in their
neighborhood, they do share the link between their central office and the
network backbone, so the bottleneck still occurs during peak usage - it just
occurs in a different place in the network. Also, DSL slows down the further
you get from their central office.
Patrick White
----- Original Message -----
From: Jim Johnson <jejohn@xxxxxxxxx>
To: <bnm03@xxxxxxx>; <omega-list@xxxxxxxxxx>
Sent: Thursday, September 23, 1999 10:05 AM
Subject: Re: interpretting PingPlotter/Cable modems
> I decided against cable because it will be a few months before I can get
it
> and cable is shared bandwidth. So if too many of your neighbors use it it
can
> deteriorate the speed considerably. Also, I think in my case the problems
is
> not really speed from me to the net. The net components/servers can
impede
> the speed.
>
> Brian Massey wrote:
>
> > What about cable modems compared to DSL? How many links there? I've
been
> > told speeds in cable modems rival T1 lines which would make it faster
than
> > most standard DSL installtions.
> >
> > -----Original Message-----
> > From: Allan Kaminsky [SMTP:allan@xxxxxxxx]
> > Sent: Wednesday, September 22, 1999 6:29 PM
> > To: Jim Johnson; omega-list@xxxxxxxxxx
> > Subject: Re: interpretting PingPlotter
> >
> > Now you're seeing the side of Internet data delivery that DBC doesn't
want
> > to talk about.
> >
> > You know the one about how a chain is as strong as its weakest link.
There
> > are a lot of links between you and DBC's server.
> >
> > I have DSL here. I've seen failures in the Central Office, the ATM
cloud,
> > and upstream failures from there. There can be failures at the backbone
> > provider, etc.
> >
> > If you put in a T1 line (upwards of $2K / month) which comes with a
> > performance guarantee, you still are only guaranteed 99%. Think about
the
> > outages that reliability figure can cover. And that gets you 24/7
support
> > with a 1 hour response time. Something you don't get with DSL.
> >
> > Compare that with the reliability of satellite. Obviously, a bird can
(and
> > has) go down. It's still orders of magnitude more reliable, which is
> > something to ponder if your trading dollars are on the line.
> >
> > Allan
> >
> > At 07:57 PM 9/22/99 -0400, Jim Johnson wrote:
> > >I'd appreciate any comments, suggestions about my Signal Online
problem.
> > >
> > >I use DSL through BellAtlantic.net with a backup of Erols.com as ISP
and
> > >a 56K modem. Either wasy, I occasionally get fade outs of quotes. Of
> > >course this usually occurs just after I enter a daytrade. the signals
> > >returns after 30 seconds to 10minutes.
> > >
> > >When I run PingPlotter I show very good speed to each of the 10-20 hops
> > >to DBC's server. When they run PingPlotter, they show good speed up to
> > >2-3 hops from me and then long times causing "time outs". Of course
> > >they say that is my ISP's issue. Seems to me what their data mean is
> > >that their signal is not getting to servers "near" me.
> > >
> > >Is my interpretation correct?
>
>
|