2mb availability on my telephone line

  CurlyWhirly 18:51 04 Dec 2004

I am currently on 1 mb broadband and, according to BT, my line ISN'T able to support the 2 mb download speed.
If this is the case how come when I am downloading a LARGE file (for example a Microsoft update patch) I *do* connect at the 2 mb speed for a VERY SHORT time?

For example even though my DESIGNATED speed is 1 mb (125 kb/sec), at the START of a LARGE download I *briefly* connect at a MUCH higher speed like for example 280 kb/sec, but (as said before) this RAPIDLY comes down in speed until after 2 or 3 seconds I am at around my designated speed of 125 kb/sec!

If my telephone line WASN'T able to support this speed, then how come I *can* connect for VERY short periods of time with NO connection loss?
Also if I am paying for a 1 mb download speed then WHY do I sometimes get more bandwidth than I am paying for even though this is VERY short lived?!
Thanks in advance for any advice.

  smokingbeagle 18:57 04 Dec 2004

it is because the download starts buffering on your PC even before you click "download".

  mattyc_92 19:00 04 Dec 2004

Everyone's (almost in anyway) broadband or dial-up internet access does this... I am using the 512kb contection (half the speed of your connection) and I can get up to speeds of up to 300Kb for the first couple of seconds of a download

  CurlyWhirly 19:05 04 Dec 2004

Thanks to you both.
So this 'extra speed' at the start of a download ISN'T real then?
That has cleared things up as I couldn't understand why I was told my line wouldn't support 2 mb when, before my very eyes, it sometimes DOES reach these kinds of speeds!

  mattyc_92 19:13 04 Dec 2004

We are pleased to help you and we hope that we have shreaded some light onto the subject...


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