Snail Pace
@dhep1957, your speed fluctuations are partially due to the fact that your line keeps dropping out, possibly due to a loss of broadband signal or some other source of interference.
BT Wholesale provided DSL circuits have what's referred to as 'Dynamic Line Management' which basically means that BT will cap your throughput marginally below you synchronisation speed. You then need to take overheads into account. If you connect at a low sync speed, even if it's only for a minute or two, then it can drive your IP Profile down and can then take days to recover.
Basically you will never be able to download above the current IP Profile as reported by a BT Speedtest. It's the fluctuations in this IP Profile that led me to believe your line is dropping out and sure enough a check of our RADIUS logs shows me this:
No as bad as it could be but probably not helping the situation. Is this you powering your equipment on/off or fiddling with your wiring etc?
You were probably provided on O2's LLU network when you were with them which doesn't have these Dynamic Line Management restrictions. You will basically get a throughput speed marginally below the rate your line is synchronised at.
Just to make it absolutely clear what you can expect...
You are provisioned on BT Wholesale's 20CN network which offers synchronisation speeds up to 8128kbps.
You are currently assigned an IP Profile of 7150kbps - This is the *highest possible* IP Profile BT can assign to a 20CN circuit so will *not* get any higher (bear in mind what I said above about this capping the throughput you will get on a speedtest).
My line is also provided on 20CN, I synchronise at the maximum line rate of 8128kbps, have an IP Profile of 7150kbps and get absolutely no errors reported on my line. Here a speedtest I've just run (you can ignore the increased upload, it's higher because I'm provisioned on IPStream Max Premium).
So basically, with a perfect line on the 20CN network, you're not really going to get a download speed above around the 6.5Mbps mark.
I recognise that you've had BT Speedtests well below this and would be interested in knowing whether or not you get the same running our speedtest instead?
It's also imperative that there's *no other network activity* during the times you're running these tests. I'd also strongly suggest running them wired rather than wireless to eliminate the potential for a flaky wireless connection.
We've had BT check for congestion at your exchange and they're not acknowledging any problems. If exchange congestion was to blame then I'd expect your speed problems to be refined to late afternoon/throughout the evening and be fine outside of these hours.
BT Wholesale provided DSL circuits have what's referred to as 'Dynamic Line Management' which basically means that BT will cap your throughput marginally below you synchronisation speed. You then need to take overheads into account. If you connect at a low sync speed, even if it's only for a minute or two, then it can drive your IP Profile down and can then take days to recover.
Basically you will never be able to download above the current IP Profile as reported by a BT Speedtest. It's the fluctuations in this IP Profile that led me to believe your line is dropping out and sure enough a check of our RADIUS logs shows me this:
Session Ended Session Duration
N/A 21:56:55 (on going)
20:40 27/Dec/2010 0:29:23
20:10 27/Dec/2010 One Day, 13:40:7
06:30 26/Dec/2010 13:46:13
16:43 25/Dec/2010 0:46:57
15:56 25/Dec/2010 1:37:9
14:19 25/Dec/2010 21:25:44
16:52 24/Dec/2010 One Day, 2:46:30
14:04 23/Dec/2010 2 Days, 17:4:25
No as bad as it could be but probably not helping the situation. Is this you powering your equipment on/off or fiddling with your wiring etc?
You were probably provided on O2's LLU network when you were with them which doesn't have these Dynamic Line Management restrictions. You will basically get a throughput speed marginally below the rate your line is synchronised at.
Just to make it absolutely clear what you can expect...
You are provisioned on BT Wholesale's 20CN network which offers synchronisation speeds up to 8128kbps.
You are currently assigned an IP Profile of 7150kbps - This is the *highest possible* IP Profile BT can assign to a 20CN circuit so will *not* get any higher (bear in mind what I said above about this capping the throughput you will get on a speedtest).
My line is also provided on 20CN, I synchronise at the maximum line rate of 8128kbps, have an IP Profile of 7150kbps and get absolutely no errors reported on my line. Here a speedtest I've just run (you can ignore the increased upload, it's higher because I'm provisioned on IPStream Max Premium).
So basically, with a perfect line on the 20CN network, you're not really going to get a download speed above around the 6.5Mbps mark.
I recognise that you've had BT Speedtests well below this and would be interested in knowing whether or not you get the same running our speedtest instead?
It's also imperative that there's *no other network activity* during the times you're running these tests. I'd also strongly suggest running them wired rather than wireless to eliminate the potential for a flaky wireless connection.
We've had BT check for congestion at your exchange and they're not acknowledging any problems. If exchange congestion was to blame then I'd expect your speed problems to be refined to late afternoon/throughout the evening and be fine outside of these hours.
Bob on your point about Wired or WiFi BT test, I was doing this for another thread
WiFi
Wired
and the BT test done tonight are below
WiFi
Wired
and the BT test done tonight are below
dhep1957,
The probable reason for that is because they are hosted in the same data centres where the connections terminate. We only ask for BT speed tests because they're the ones we can see on the systems.
Jojo
The probable reason for that is because they are hosted in the same data centres where the connections terminate. We only ask for BT speed tests because they're the ones we can see on the systems.
Jojo