New Zealand ADSL Mailing List


Re: micro outages

From: Jonathan Santaana <jonathan.santaana_at_nzse.co.nz>
Date: Wed, 6 Mar 2002 20:38:15 +1300
Message-ID: <3C867E3E.4881.C8F85A5@localhost>

Matthew <gossard@xtra.co.nz> wrote:

> Isn't jetstream sold as something like 'Maximum of 8Mbit downstream' or
> some PR rubbish ?

  No, although that's the maximum speed Telecom claim your DSL modem will
negotiate with the DSLAM at the exchange. This is *not* the same thing as
"the maximum download speed you'll get from the service".

> Why isn't jetstream sold as 3.5Mbit service ? (if it is infact rate
> limited). The difference between 450k/sec and almost 1Meg/sec is quite a
> bit when you live almost right next door to your exchange....
>
> It's amazingly moot i guess, jetstream charged at what it is and all....
> but still, it should be advertised as 3.5Mbit or whatever.

  No it shouldn't, because it's not. Wayne stated on Monday that Telecom
do not throttle the DSL (except for Jetstart customers, obviously).
However, I recall it being stated here before that Telecom's ATM network
only supports a maximum of approximately 3.5Mb/sec *per TCP session*. To
quote Juha, yesterday evening:

> I believe Jonathan Segal at Telecom stated that IP.net supports a maximum
> of 3.5Mbps per TCP session. That seems to tally with my experience, but if
> I aggregate sessions, I can max out my Jetstream connection (and go
> bankrupt in the process).

  This means that if you're downloading one file from JSG or similar fast
servers, you'll only use about 40% of your connection. However, if you
download three at once, you can probably take up your entire 8Mbits of
bandwidth. I'm pretty sure this has been explained before (and not just
yesterday by Juha).

   Jonathan

-- 
This message is part of the NZ ADSL mailing list. 
see http://unixathome.org/adsl/ for archives, FAQ, 
and various documents. 
To unsubscribe: send mail to majordomo@lists.unixathome.org 
with "unsubscribe adsl" in the body of the message 
 
Received on Wed Mar 6 20:39:03 2002

This archive was generated by hypermail 2.2.0 : Thu Nov 30 11:48:22 2006 EST