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Standard User AndrewCSP
(newbie) Mon 03-Oct-11 00:10:00
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BT ultimatum. What to do?


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I am in the infamous Welsh not-spot of Erbistock, and have had a service from BT for a year. My speed is typically 70 Kbps (0.07 Mbps), so I have been complaining to BT and have had a number of engineers out here to investigate. They have all said that I should get a much better speed and have suggested the 0.5 to 1 Mbps range, which would be great!! Usually after they come, the speed is increased (the best I have seen is 1.135 Mbps), but then slowly deteriorates.
BT have provided a new modem (HomeHub3), tried a different wire pair, installed a new faceplate, and changed the house wiring so that broadband is only on the first socket.
By telephone, BT have now said that I must accept the current speed (latest speed test shows download speed 30 Kbps, IP Profile of 135 Kbps) or else I can find another supplier.
Since all of the engineers coming here say it should be faster, what can I do?
My hub says that the line attenuation is 71.5 dB.
I would like to video chat with family abroad, so satellite with its long latency is not an option.
Standard User XRaySpeX
(knowledge is power) Mon 03-Oct-11 00:22:12
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
Post your router stats.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 17 Meg Untweaked 19 Meg Tweaked WBC
Administrator MrSaffron
(staff) Mon 03-Oct-11 09:34:04
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
BT is under no obligation to provide a broadband service, so they appear to be offering you a take it or leave it option now.

The full router stats, as well as what www.speedtester.bt.com shows is useful.

Suspect you have a widely varying IP Profile, which is keeping your speedtest results low.

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.


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Standard User AndrewCSP
(newbie) Mon 03-Oct-11 11:05:23
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
I have logged results from www.speedtester.bt.com going back six months, and I always presumed that BT had access to these, although the engineers never seemed to know anything about them. That is where I got my speed of 70 Kbps from, and the IP Profile of 135 Kbps. I have never seen the IP Profile increase of its own accord (by algorithm) except after an engineer visited and presumably 'reset' it.

So this morning speedtester.bt shows:
Download speedachieved during the test was - 88 Kbps
For your connection, the acceptable range of speeds is 50-250 Kbps.
Additional Information:
Your DSL Connection Rate :160 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 135 Kbps

My hub shows:
ADSL Line Status

Connection Information

Line state: Connected
Connection time: 3 days, 22:25:08
Downstream: 160 Kbps
Upstream: 448 Kbps

ADSL Settings

VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Interleaved
Noise margin (Down/Up): 12.6 dB / 15.0 dB
Line attenuation (Down/Up): 71.5 dB / 31.5 dB
Output power (Down/Up): 13.4 dBm / 12.3 dBm
FEC Events (Down/Up): 7017134 / 1509
CRC Events (Down/Up): 8516 / 981
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 5380 / 792
Error Seconds (Local/Remote): 72986 / 20566

If I go to another land-line based provider, they will still use the same cable, so am I stuck? There is next-to-no mobile signal here to use a dongle.
Administrator MrSaffron
(staff) Mon 03-Oct-11 11:12:26
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
Engineers work for Openreach, and are not trained on the back room systems, generally phone someone who providers info if needed.

Speedtester is ran by BT Wholesale, an important distinction.

71dB attenuation, which with the upstream high too confirming the long line, means you really are at the edge of getting anything to work at all.

For lines like yours, then BT's preferred option would be charge you or someone providing funding to meet the 2015 2 Mbps USC for BET
http://www.thinkbroadband.com/news/i/4640.html

can you restart the modem, to just confirm whether the 12dB margin is the target. Suspect it is since the errors stats suggest some noise causing instability.

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User wirelesspacman
(fountain of knowledge) Mon 03-Oct-11 11:44:56
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
I would not discount satellite entirely to be honest - especially if there is no other viable solution for now.

I have Skype voice conversations with a consulting colleague over satellite and it is no real problem for us (he is based in Norfolk, where I think they have even to invent roads let alone discover broadband!).

Why not try to see if you could do a trial/test with satellite? I would have thought that one of the providers ought to be able to sort something out (eg someone local-ish who has it) so that you could try a video link to see how you get one.

Peter

Loop Scorpio Ltd
Ledbury; Highnam; Newent; Painswick; Arlingham, Cranham
===============================================

Symmetric Pro
Now also offering 20 Mbps symmetric broadband!
Standard User ukhardy07
(committed) Mon 03-Oct-11 12:09:46
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Re: BT ultimatum. What to do?


[re: AndrewCSP] [link to this post]
 
Choosing an ISP that doesn't use BT profile system and that can have a fixed SNR noise margin of 6db might be good.

As bt is increasing the noise margin, lowering the speed and then profiling the line too.

TBH though you'd not see much over 150kbps probably.
Anonymous
(Unregistered)Mon 03-Oct-11 12:15:23
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Re: BT ultimatum. What to do?


[re: wirelesspacman] [link to this post]
 
The output power seems a little low too....line fault? Card fault? If it were up at the normal 18dBm then there would be another 5dB or so of margin.

Plot your modem's SNR margin figures over a day or two to see if there are any patterns...your line may be being affected by interference as well as just being plane long!
Standard User AndrewCSP
(newbie) Mon 03-Oct-11 17:51:53
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Re: BT ultimatum. What to do?


[re: MrSaffron] [link to this post]
 
Thanks for the suggestions. I have restarted the modem and the hub details now say 736 Kbps as follows:
ADSL Line Status

Connection Information

Line state: Connected
Connection time: 0 days, 00:25:43
Downstream: 736 Kbps
Upstream: 448 Kbps

ADSL Settings

VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Interleaved
Noise margin (Down/Up): 7.2 dB / 16.0 dB
Line attenuation (Down/Up): 71.4 dB / 31.5 dB
Output power (Down/Up): 16.0 dBm / 12.4 dBm
FEC Events (Down/Up): 382743 / 3
CRC Events (Down/Up): 206 / 1
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 153 / 0
Error Seconds (Local/Remote): 176 / 2

but speedtester.bt.com still shows a measly 91 Kbps:

Download speedachieved during the test was - 91 Kbps
For your connection, the acceptable range of speeds is 50-250 Kbps.
Additional Information:
Your DSL Connection Rate :736 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 135 Kbps

I don't understand this at all.
Standard User AndrewCSP
(newbie) Mon 03-Oct-11 18:02:27
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Re: BT ultimatum. What to do?


[re: Anonymous] [link to this post]
 
Anonymous,

I have now put up the latest readings, and the output power has gone up from 13.4 dBm to 16.0 dBm, but still not 18. Is this significant, and can I affect this value?

You suggest plotting the SNR (Signal to Noise Ratio) but I can't tell which figure this is. I have some records going back, so if I knew which figure to use, maybe I can seek a pattern. Do you mean Output power and Noise margin, and if so do the last 2 readings seem make any sense?

Andrew
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