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Standard User ian72
(knowledge is power) Tue 26-Oct-10 15:10:20
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Re: contention


[re: oldperson] [link to this post]
 
Can you try powering the router off and back on and pasting those same statistics as soon as the router comes back on line? This would tell us what your router is capable of at first connection - it would be especially useful to do this twice - once after dark and again at about 10am or after (the differences between dark and daylight hours can be quite significant).

It is possible that given the high noise margin you have it may be that you could actually get double the speed from Sky and that it is the BT profile system that is slowing you down.
Standard User XRaySpeX
(knowledge is power) Tue 26-Oct-10 15:18:39
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Re: contention


[re: oldperson] [link to this post]
 
In reply to a post by oldperson:
BT speedtester (I haven't used that speedtester before).
The main point of this speedtester over all others, when you are on IPStream/ ADSL Max as you are, is that it gives your IP Profile, which is BT's DLM ceiling on your actual download speed, thus:
IP Profile for your line is - 2000 Kbps
The useful section that we wanted is the "1. Best Effort Test".

Your line should be capable of about 4 Meg Sync but you are only getting about half that. Your D/S NM is high which could indicate your line is noisy. Time to look at your wiring.

Have you removed the ring wire? Plugged into hidden test socket? Filters? ...

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 16 Meg LLU BB
Standard User XRaySpeX
(knowledge is power) Tue 26-Oct-10 15:24:57
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Re: contention


[re: oldperson] [link to this post]
 
That's just great! Exactly what we needed. Continue that way when you post stats.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 16 Meg LLU BB


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Standard User XRaySpeX
(knowledge is power) Tue 26-Oct-10 15:28:33
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Re: contention


[re: ian72] [link to this post]
 
In reply to a post by ian72:
it is the BT profile system that is slowing you down.
No, the IP Profile is dependant on the Sync Speed and it is that that is too slow by half. More likely due to noise on line.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 16 Meg LLU BB
Standard User ian72
(knowledge is power) Tue 26-Oct-10 15:36:45
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Re: contention


[re: XRaySpeX] [link to this post]
 
Yes. But, it could be that the router during the day can sync at 4Mb+. But, if it resets then at night to 2Mb then the profile will lower and stay that way for days. By avoiding the profile on LLU the user could reset the router of a morning and get 4Mb during the day whilst getting a lower speed at night.

Therefore, it is the BT profile system that is slowing the OP down (probably).
Standard User RobertoS
(legend) Tue 26-Oct-10 16:03:24
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Re: contention


[re: ian72] [link to this post]
 
In reply to a post by ian72:
Yes. But, it could be that the router during the day can sync at 4Mb+. But, if it resets then at night to 2Mb then the profile will lower and stay that way for days. By avoiding the profile on LLU the user could reset the router of a morning and get 4Mb during the day whilst getting a lower speed at night.

Therefore, it is the BT profile system that is slowing the OP down (probably).
No.

The sync-time noise margin is what is slowing him down, as the IP Profile is right for the sync. The sync is too low.

You would be correct if the profile were too low, for the reasons you give.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - O2 Standard.
Standard User ian72
(knowledge is power) Tue 26-Oct-10 16:14:11
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Re: contention


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
In reply to a post by ian72:
Yes. But, it could be that the router during the day can sync at 4Mb+. But, if it resets then at night to 2Mb then the profile will lower and stay that way for days. By avoiding the profile on LLU the user could reset the router of a morning and get 4Mb during the day whilst getting a lower speed at night.

Therefore, it is the BT profile system that is slowing the OP down (probably).
No.

The sync-time noise margin is what is slowing him down, as the IP Profile is right for the sync. The sync is too low.

You would be correct if the profile were too low, for the reasons you give.


Not quite sure what is going on here. The sync had occurred 16 hours before the post - so during nighttime hours (I believe). Therefore the SNR at a resync could be significantly lower than the current 16dBs. It may even be a 6dB SNR with a wild variation between day and night.

This is the main reason I asked for a daytime resync with stats straight after - it would tell us the maximum speed the line is capable of and the target SNR.

Therefore I still stand by what I said - it could be the profile that is causing the slow speeds due to low nighttime syncs which could be got around with sky as you could then reset the router each morning to get max speeds for the daylight hours.
Standard User oldperson
(newbie) Tue 26-Oct-10 16:27:43
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Re: contention


[re: RobertoS] [link to this post]
 
About 18 months ago I was having terrible trouble getting any broadband service - speedtest (not the BT version) - was giving my download speed as 0.5mb or lower and I was losing the service completely frequently.

I got an Openreach engineer to investigate and do some tests but he worked locally and knew immediately that the main problem was the line distance to the exchange and his statistics confirmed this. He rerouted my line but I think it must still be about 3 km. He also replaced my main socket and checked that the wiring appeared to be fine. I think I then got over 3mb speed for a while before it returned to about 2mb, perhaps because more houses have been built in the area and there is more contention.

My next door neighbour has SKY and he says he has very poor speed (unfortunately I don't know the actual speed) although the service never goes down. BT told him his line would not support BT Vision. I suspect he has the length of line I used to have and there is now no capacity to offer him a shorter line to the exchange.

I will try about 5pm to get the statistics again from my BTHub (after disconnecting and reconnecting) as soon after I will not be the only one using our Hub.

What I am hoping from the help I am being given on this site is to see if I (or BT) can do anything to improve the speed of my internet service or should I go over to SKY in the hope that they will offer a better service.
Standard User oldperson
(newbie) Tue 26-Oct-10 16:40:38
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Re: contention


[re: oldperson] [link to this post]
 
The latest figures from the Hub at 16.30 approx are:

ADSL line status
Connection information
Line state Connected
Connection time 0 days, 0:02:49
Downstream 2,656 Kbps
Upstream 448 Kbps


ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 15.1 dB / 16.0 dB
Line attenuation (Down/Up) 53.0 dB / 31.5 dB
Output power (Down/Up) 17.8 dBm / 12.3 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 17 / 0
CRC Errors (Down/Up) 0 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 0

I will send these the close this site and get the bt speedtest results

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Standard User oldperson
(newbie) Tue 26-Oct-10 16:50:17
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Re: contention


[re: oldperson] [link to this post]
 
The latest speed test from BT at about 16.45 is:

FAQ


Test1 comprises of two tests

1. Best Effort Test: -provides background information.

Download Speed
1871 Kbps

0 Kbps 2000 Kbps
Max Achievable Speed

Download speedachieved during the test was - 1871 Kbps
For your connection, the acceptable range of speedsis 800-2000 Kbps.
Additional Information:
Your DSL Connection Rate :2656 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 2000 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 22.78:29.57:47.65 (SBE:NBE:PBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.

The results of this test will vary depending on the way your ISP has decided to use these traffic classes.

2. Upstream Test: -provides background information.

Upload Speed
332 Kbps

0 Kbps 448 Kbps
Max Achievable Speed

>Upload speed achieved during the test was - 332 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 448 Kbps


We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.

Please visit FAQ section if you are unable To understand the test results.
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