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Broadband Speeds


Peter_HMR
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thats a load of coblers, mine was well out on the actual line speed (checked properly about a week ago when we changed provider, cant recall how it was checked, but it involved witch craft and trickery from a technically minded person)

Alot of things can determine the true data thruput.things like distance from the exchange.line quality.attenuation. ISP factors also come into play like contention ratio of the pipes.

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I'm too drunk to answer this with a reasonable analogy now, will do tomorrow at work :lol:

 

Save to say "3MB" = theoretical. Much like 0-60 times are quoted in books and guides. With the required following wind, luck, more luck etc you might get what they say, but you won't :lol:

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I'm too drunk to answer this with a reasonable analogy now, will do tomorrow at work :lol:

 

Save to say "3MB" = theoretical. Much like 0-60 times are quoted in books and guides. With the required following wind, luck, more luck etc you might get what they say, but you won't :lol:

3Mb :lol: remember there is 3MB (megabytes) and 3Mb (megabits) most adsl connections are on megabits.

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I'm too drunk to answer this with a reasonable analogy now, will do tomorrow at work :lol:

 

Save to say "3MB" = theoretical. Much like 0-60 times are quoted in books and guides. With the required following wind, luck, more luck etc you might get what they say, but you won't :yes:

 

 

Bloody ******** :lol:

 

 

 

 

LB :lol:

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I'm too drunk to answer this with a reasonable analogy now, will do tomorrow at work :lol:

 

Save to say "3MB" = theoretical. Much like 0-60 times are quoted in books and guides. With the required following wind, luck, more luck etc you might get what they say, but you won't :lol:

3Mb :lol: remember there is 3MB (megabytes) and 3Mb (megabits) most adsl connections are on megabits.

 

3 megabits = 0.375 megabytes

 

There are 8 bits to a byte.

 

So 3mbps is equivilent to 3,000,000 divided by 8 or 375,000 bps or 375Kbps.

 

The 3mbps is the 'advertised' rate and if you were to ask the promoter they would say that means "up to" 3mbps.

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given that we are less than a mile from the exchange and have just undergone a switch, the last week our line speed was up and down to ifnd our best speed and we were informed instead of the 7.5 max (this distance from exchange) it would be 6.5, this was confirmed by my dad doing technical trickery, not sure that site is correct.

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This is another quite accurate speed test site. http://speedtester.bt.com/

 

The speed can vary by the second and all IP's advertise their speeds as "up to ?Mbps", unless its anything under 2 Mbps.

 

If you think you have a steady very fast speed, do a speed test between 6pm and 9pm, you might be surprised at how low it falls during the busy times.

 

Having had speeds over 5Mbps, I believe for normal surfing (not downloading), you can't tell the difference in PC performance between 1.5Mbps and 6Mbps.

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The problem and even more so with DSLMax is Peak performance issues, especially on a 50:1 contention ratio, during the peak hours people hammer their downloads and you notice the performance issues dramatically, i remember being on a commercial ISP my downloads dropped to like 1mb when i was on DSLMax (8mbps).

 

I tend to steer clear of the BT Tester unless im on the phone to the ISP sorting out my stuck BRAS profile.

 

Luckily my ISP is a non-commercial one now, they have 4 centrals, the 4th one not completely live and i think they have put in plans for another 2 more centrals which should take care of the load issues they sometimes have.

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given that we are less than a mile from the exchange and have just undergone a switch, the last week our line speed was up and down to ifnd our best speed and we were informed instead of the 7.5 max (this distance from exchange) it would be 6.5, this was confirmed by my dad doing technical trickery, not sure that site is correct.

 

 

It depends how you are judging "Distance" you cant get an exact distance from the exchange but you can get the distance "As the crow flies" still then you have the extra attributes such as signal quality and attenuation which will effect the connection your line can handle.

 

Best way to do it is log onto your router and get your line stats...then look on the web for the margins so you can judge what your line is capable of...

 

linestat1.JPG

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BT can get an accurate measurement of distance from the exchange with a woosh test. You used to be able to do this as a punter dialling a BT engineering No. but they removed the facility. You can still do it but you'd need to know the codes :lol:

 

The whole point with DSL MAX is that providers can cap leechers so the rest don't suffer. Also there's no such thing as a "sticky BRAS profile", you are either in the process of adaptively creating an IP profile for your connection, or you are not. If you are not, line quality changes will not have an effect on your IP profile and therefore your throughput, commonly this is what people call "sticky BRAS profiles"

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