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Old 13-03-2009, 12:25   #208
Mike_A
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Re: Legal action taken against Virgin Media throttling practices

Quote:
Originally Posted by jamiefrost View Post
I'd have to disagree, I regulary get STM'd and it never effects my ability to connect to websites. How does being limited to 5meg or what ever stop you from connecting. The average ADSL user would have the same issues.

It may be soemthing else but i don't see how having a speed limit applied would cause this.

JJ
Jamie, maybe have a read of http://en.wikipedia.org/wiki/Traffic_shaping. It explains the principles.

You may conclude in theory that throttling a connection of 20Mb to 5Mb means a drop in speed and access to 25%. It doesn't. There are various methods used to shape Internet traffic from a client, including packet delays through a FIFO system (First In, First Out). Now apply this to little Freddie who wants to play destroy the universe type games with his online chums. He sends an action command. It gets throttled so does not reach destination servers in time. Pingback from the gaming server results in a repeated instruction which also gets throttled, and so on. If luckless Freddie doesn't get the command through in time his universe falls apart. Meanwhile his mother, plays online bingo from another machine. She hits the number for the national jackpot - but the same thing happens. And his father, playing PartyPoker on another machine, suddenly finds he cannot respond with a bet to a top hand. In each case the packets are delayed, not on the basis of this one connection, but on the basis of a whole node or more of connections. In each case the game servers "time out" the player - they cannot hold the hold game up for one person. On the same node, Charlie the copyrights thief is busily downloading torrent movies for burning onto a DVD for sale at the local pub. He suffers the same but not with an immediately noticeable effect. So whilst Charlie copyright thief disappears to the pub to await his downloads, little Freddie's family have been subjected to torment and frustration. The effects upon them of "throttling" through packet delay are not 75% but considerably more. And that is only the result of the delay method of STM.

Bandwidth restriction is a contract breach that contains compounded effects. It will be more noticeable to some than others. Even so, it remains a contractual breach, a dishonest practice when compared to the original sale, and a deceitful practice when compared to the methods used to communicate what is happening. 75% capping means "up to" 25% service provision. It can also mean below 1%.
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