Kitz Forum

Broadband Related => Broadband Hardware => Topic started by: slippalong on September 10, 2007, 08:29:18 PM

Title: BT Home Hub
Post by: slippalong on September 10, 2007, 08:29:18 PM
Hi all.I am a newbie to the forum but have been accessing the website for several weeks.Very informative :thumbs:Anyway I seem to be in a long line of users with BT Home Hub problems.Worked ok for about 2 weeks but slow. I have been on the phone to India trying to explain that the hub will only work for a max of about 4 minutes before it crashes.I have done all the usual things to get it to work but without success.I have now gone back to using my BT Voyager 2500v which has always worked pefectly,but the line stats are not very good
                                DOWN       UP
Line Rate                4160 Kbps 448 Kbps
Noise Margin           13.4 dB        23.0 dB    
Line Attenuation      46.0 dB      26.0 dB

As India seems to deny I have problem with my Home Hub should I consider a different router or keep pestering BT for a replacement Home Hub?
Title: Re: BT Home Hub
Post by: Astral on September 10, 2007, 10:08:23 PM
Hi slippalong

Welcome to the forum.

It sounds as if there is a problem with your Home Hub, if you are getting reasonable speeds with your Voyager. Whether it is a physical fault or something wrong with the settings I am not able to advise.

If you could look for any brand and/or model number on the Home Hub and post them here, it will save time when somebody more knowledgeable sees your post.
Title: Re: BT Home Hub
Post by: mr_chris on September 11, 2007, 01:22:33 AM
Welcome aboard :)

When you say it crashes, can you explain a bit about what's happening?

The reason I ask is that we might be able to give you a few buzzwords to use with BT support that will convince them that it is broken and needs replacing.
Title: Re: BT Home Hub
Post by: kitz on September 11, 2007, 02:13:22 AM
>> When you say it crashes, can you explain a bit about what's happening?

agreed.  we need to know basically if the router is simply loosing the connection (dsl light goes off) ow whether it totally locks up.

The stats from the 2500V look fine.. but it would also be interesting if we could compare any stats you can get from the Home Hub.
Title: Re: BT Home Hub
Post by: Pwiggler on September 11, 2007, 08:23:55 AM
the easiest way of getting replacement equipment from the indian chappies, is, when they ask what the problems is say:  the routers plugged into the mains only, no other cables, it doesnt work, no lights, no sounds, no nothing

they should then send you another one.

(ps... make sure no routers are attached to the phone line when you do this)
Title: Re: BT Home Hub
Post by: slippalong on September 11, 2007, 07:23:41 PM
Hi all.thank you for replying to my post.When I say the Hub crashes what I mean is it will connect for a while but then  lose the connection.All I get is the wireless light on green and the broadband light flashing, all other lights off.If I try to connect I get a message saying BT Home Hub not connected to a broadband line?I am at the moment connected so I will give you my stats while I can:-
DSL Connection   

Link Information
         
Uptime:   0 days, 0:09:53
Modulation:   G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]:   448 / 800
Data Transferred (Sent/Received) [KB/MB]:   274.00 / 1.57
Output Power (Up/Down) [dBm]:   11.5 / 17.5
Line Attenuation (Up/Down) [dB]:   26.0 / 45.0
SN Margin (Up/Down) [dB]:   23.0 / 21.5
Vendor ID (Local/Remote):   TMMB / ALCB
Loss of Framing (Local/Remote):   0 / 0
Loss of Signal (Local/Remote):   33 / 0
Loss of Power (Local/Remote):   0 / 0
Loss of Link (Remote):   0
Error Seconds (Local/Remote):   36,130 / 0
FEC Errors (Up/Down):   0 / 0
CRC Errors (Up/Down):   0 / 12,676
HEC Errors (Up/Down):   0 / 7,848
Title: Re: BT Home Hub
Post by: kitz on September 13, 2007, 01:21:24 AM
Hi

The symptoms described are those of loosing sync.  This occurs when your router "cant hear the signal"* with the exchange.  Its well known that certain routers perform better than others particulary on long lines, and some are able to cope better with lower SNR Margins.

Unfortunately the HomeHub is one of those routers that doesnt seem to perform well on problem/long lines and does have a tendancy to drop the connection when some other routers would be able to hang on to the signal.  The flashing green light is when it cant hear the signal, to be able to connect you.

From the stats you have provided, its obvious that there are a lot of problems going on there with errors (theres actually a heck of a lot of errors considering the router had only been up for less than 10 mins).  Theres quite a large SNR Margin there so why it should be performing so poor I couldnt really say for sure.

In view of the fact that the Voyager 2500V is working fine, then its pointing the finger at the HH.
 
If possible see if BT will issue a replacement HH, because although the HH may not perform as well as some other routers, the huge difference between the 2 routers is far more than I would expect to see if it was just a "general HH thing".

Go along the lines that the router is consistantly loosing sync with the exchange and its recording a large amount of CRC/HEC errors and Errored seconds.  State that your other router doesnt have this problem and when using your voyager the line is stable.

Its certainly worth a try just to eliminate the possibility that this particular HH is faulty, before shelling out yourself on another router.



*not strictly true -  but the easiest way to explain it in simple terms.
Title: Re: BT Home Hub
Post by: Pwiggler on September 13, 2007, 09:39:10 AM
TBPH kitz, if slippalong goes down the route of reporting FEC/HEC errors to bt's helpline he'll get roped into hours of futile diags and end up with a btor engineer visit which wont proove anything.

i'd still go with the 'no power, no lights' and he'll get one straight away thru the post.

'it's ooover to youuuu' as lloyd would say.
Title: Re: BT Home Hub
Post by: mr_chris on September 13, 2007, 09:58:53 AM
I think I might be with pwiggler on this one.. we all know what the BTBB helpdesk is like.. the script doesn't really seem to cater for HEC/FEC errors.. as it is he'll still get the "is the yellow wire plugged into the socket on the back of the Home Hub..." set of questions without trying to go into line stats!

It might not be strictly the case, but the desired outcome is the same, and it's not as if he's trying to get a replacement hub where none is needed!
Title: Re: BT Home Hub
Post by: slippalong on September 13, 2007, 07:45:55 PM
Hi all.Thank you for your replies.The situation at the minute is I reset my hub the night before last and left it go for 18 hours to settle in,connected it when I got home from work and it lasted a whole 8 minutes before disconnecting and refusing to connect any more.As I had to work on the internet tonight I have had to reconnect my Voyager 2500 which as always is behaving perfectly.I am hoping to have an  NTE5 ADSL Faceplate fitted tomorrow.So I will give the hub one more try and if that wont work I guess it's all weekend on the phone to India to try and get a replacement Hub.Will let you know the outcome.
Title: Re: BT Home Hub
Post by: kitz on September 13, 2007, 10:22:34 PM
Thanks for keeping us informed. :)

Good luck and let us know how you get on with bothe the NTE5 faceplate and also with BT

Title: Re: BT Home Hub
Post by: slippalong on September 22, 2007, 07:33:43 AM
Hi all.Just an update on my BT Hub problem.I had a NTE5 faceplate fitted on Wednesday which worked fine for the Voyager 2500v so out of curiosity I thought I will give the Hub one more try although BT are sending me a replacement and guess what,it has been working fine ever since I connected,Still low speeds but I will give it the three days to see what happens.My only concern is I am still getting an awful lot of errors as you can see

Uptime:   2 days, 8:38:00
Modulation:   G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]:   448 / 160
Data Transferred (Sent/Received) [MB/MB]:   13.24 / 78.09
Output Power (Up/Down) [dBm]:   11.5 / 11.5
Line Attenuation (Up/Down) [dB]:   26.0 / 45.0
SN Margin (Up/Down) [dB]:   23.0 / 27.0
Vendor ID (Local/Remote):   TMMB / ALCB
Loss of Framing (Local/Remote):   0 / 0
Loss of Signal (Local/Remote):   39 / 0
Loss of Power (Local/Remote):   0 / 0
Loss of Link (Remote):   0
Error Seconds (Local/Remote):   7,910 / 0
FEC Errors (Up/Down):   0 / 4,726,348
CRC Errors (Up/Down):   0 / 367,664
HEC Errors (Up/Down):   0 / 142,456

The problem is I cannot get any information on why these errors occur or in what direction to go to find a remedy ie:- would it still be a problem with the hub or is it a line problem causing them?As usual any help would be most appreciated. 
Title: Re: BT Home Hub
Post by: roseway on September 22, 2007, 08:03:11 AM
That downstream connection speed (they call it 'Bandwidth') is ridiculously low. It's actually below the lowest level for which an IP profile is specified. If a reboot of the HomeHub doesn't significantly change it then I would dump it and use the Voyager until the new hub arrives.
Title: Re: BT Home Hub
Post by: slippalong on September 22, 2007, 08:09:05 PM
Hi all.Another update.My replacement Hub arrived today and I connected it this afternoon,It looks more promising.Still an awful lot of FEC errors but not very many CRC or HEC errors and no error seconds.Have posted my stats.hopefully someone can tell me if they look ok.Many thanks

Uptime:   0 days, 5:17:55
Modulation:   G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]:   448 / 4,864
Data Transferred (Sent/Received) [MB/MB]:   5.06 / 41.26
Output Power (Up/Down) [dBm]:   11.5 / 19.5
Line Attenuation (Up/Down) [dB]:   25.0 / 45.0
SN Margin (Up/Down) [dB]:   24.0 / 11.0
Vendor ID (Local/Remote):   TMMB / ALCB
Loss of Framing (Local/Remote):   0 / 0
Loss of Signal (Local/Remote):   0 / 0
Loss of Power (Local/Remote):   0 / 0
Loss of Link (Remote):   0
Error Seconds (Local/Remote):   0 / 0
FEC Errors (Up/Down):   0 / 6,471,694
CRC Errors (Up/Down):   0 / 24
HEC Errors (Up/Down):   0 / 16
Title: Re: BT Home Hub
Post by: roseway on September 23, 2007, 07:16:26 AM
Those are very good figures. You're now connecting at 4864 kbps downstream, which should result in your IP profile going up to 4000 in a day or two. If the connection proves to be stable then you've got a result.

The FEC errors are not significant. They are the consequence of interleaving being applied to your connection to improve its stability. These errors are in fact errors which have been autocorrected without the need of any retransmission, by the use of forward error correction which is part of the interleaving process. The only downside of interleaving is that the latency (ping) increases, which might have some slight consequence if you're an online gamer.
Title: Re: BT Home Hub
Post by: slippalong on September 23, 2007, 09:56:39 AM
Hi Roseway.Many thanks for your reply.I don't go online gaming so not a problem there.Have been connected for 19 hours now, still no major problems that I can see.Will give it a few days and fingers crossed I will be up to a reasonable speed.
Title: Re: BT Home Hub
Post by: kitz on October 04, 2007, 12:31:20 PM
Glad to see that things are better on the new HH.   Hope everything has now sorted :)
Title: Re: BT Home Hub
Post by: shape on December 09, 2007, 11:22:48 PM
Hello all, nice informative site.
Sorry to jump in on this thread, but i'm having a similar issue with the homehub loosing sync, and giving me a terrible connection.
I recently migrated to BT, i used to sync at 5.5meg but now around 0.1 meg.
I blame the hub, but bt having none of it, so i'm on my second hub but no improvement.
I have had many engineer visits, changed drop wire, new adsl face plate, the broadband engineers all sync up at 4 meg straight away, so more proof to me its the hubs.
What i'm thinking is if any of the currently stocked bt business routers will be good on a line of 41db, i'll still need the hub for my broadband bt calls.
Many thanks for any info.
Title: Re: BT Home Hub
Post by: Astral on December 09, 2007, 11:32:04 PM
Hi shape, welcome to the forum.

Sorry I can't answer your question, despite having a BT wireless hub, but I'm sure somebody clever will be along to help you soon.
Title: Re: BT Home Hub
Post by: kitz on December 10, 2007, 03:35:15 AM
>> if any of the currently stocked bt business routers will be good on a line of 41db

If you mean the 2Wire router that they (or at least were doing) ship with the BT business accounts - then they do seem to have a fairly good reputation... far more so than the HHs.
Title: Re: BT Home Hub
Post by: Pwiggler on December 10, 2007, 07:47:21 AM
hi shape

my attenuation is in the 60's according to my HH and i still sync at 7 meg.

what are you using to measure your speed? (ie 0.1 meg)



Title: Re: BT Home Hub
Post by: shape on December 10, 2007, 09:35:28 AM
Thanks for the replies.
Just had another engineer visit.
He has told me to tell the high level resolutions bloke to ring him, and if he has any sort of power he will suggest what he thinks the next course of action should be.
As the customer he said he could not tell me that he thinks I need a lift and shift. (what is this)
I have to wait an hour before i ring high level resolutions to give the engineer time to get his report in.
For my speed results i have used bt speed tester.
Will the 2 wire support vision and broadband talk?
Many thanks for the replies.

I have been reading that the speedtouch 585 is a very good and stable router.
Can anybody recommend a good source for one?
Thanks again ;-)
Title: Re: BT Home Hub
Post by: shape on December 10, 2007, 08:56:48 PM
Just spoke to BT, there sending me out a voyager 2110.
It can do vision, but not broadband calls.
That will work with DMT for the future should I need it.
Going to monitor if the voyager 2110 will be more stable on my line.
If it is i'll have to look at a solution for getting broadband calls working as I have the anytime package.
Maybe I'll have to buy a new phone or router or both, and try and come to some sort of deal with resolutions.
Just a wait and see game I suppose.
Title: Re: BT Home Hub
Post by: shape on December 10, 2007, 10:16:13 PM
I have just compiled todays stats for your appraisel.
First taking this morning,
Second tonight.

Test1 comprises of two tests

1. Best Effort Test: -provides background information.
IP profile for your line is - 3000 kbps
DSL connection rate: 448 kbps(UP-STREAM) 3744 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 2399 kbps
2. Assured Rate Test: -provides background information.
Assured Rate IP profile on your line is - 500 kbps
Actual IP throughput achieved during the test was - 553 kbps


http://www.thinkbroadband.com/speedtest/results/id/11973043523370977912.html


Link Information


Uptime: 0 days, 7:35:13

Modulation: G.992.1 annex A

Bandwidth (Up/Down) [kbps/kbps]: 448 / 3,744

Data Transferred (Sent/Received) [MB/MB]: 9.76 / 89.78

Output Power (Up/Down) [dBm]: 12.0 / 19.5

Line Attenuation (Up/Down) [dB]: 20.5 / 42.0

SN Margin (Up/Down) [dB]: 22.0 / 7.5

Vendor ID (Local/Remote): TMMB / TSTC

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 4 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 11 / 0

FEC Errors (Up/Down): 0 / 187,011

CRC Errors (Up/Down): 0 / 889

HEC Errors (Up/Down): 0 / 796

Line Profile: Interleaved




Tonight..

Link Information
   
 
Uptime: 0 days, 3:55:40
 
Modulation: G.992.1 annex A
 
Bandwidth (Up/Down) [kbps/kbps]: 448 / 1,024
 
Data Transferred (Sent/Received) [MB/MB]: 7.77 / 20.87
 
Output Power (Up/Down) [dBm]: 12.5 / 18.0
 
Line Attenuation (Up/Down) [dB]: 20.5 / 42.0
 
SN Margin (Up/Down) [dB]: 10.0 / 8.0
 
Vendor ID (Local/Remote): TMMB / TSTC
 
Loss of Framing (Local/Remote): 0 / 0
 
Loss of Signal (Local/Remote): 6 / 0
 
Loss of Power (Local/Remote): 0 / 0
 
Loss of Link (Remote): 0
 
Error Seconds (Local/Remote): 19 / 0
 
FEC Errors (Up/Down): 0 / 2,896
 
CRC Errors (Up/Down): 0 / 23
 
HEC Errors (Up/Down): 0 / 20
 
Line Profile: Interleaved


Test1 comprises of two tests

1. Best Effort Test:  -provides background information.
    IP profile for your line is - 750 kbps
    DSL connection rate: 448 kbps(UP-STREAM)  1024 kbps(DOWN-STREAM)
    Actual IP throughput achieved during the test was - 447 kbps
2. Assured Rate Test:  -provides background information.
    Assured Rate IP profile on your line is - 500 kbps
    Actual IP throughput achieved during the test was - 455 kbps




And this was before I migrated to BT.

Test1 comprises of Best Effort Test:  -provides background information.
    IP profile for your line is - 4500 kbps
    DSL connection rate: 448 kbps(UP-STREAM)  5056 kbps(DOWN-STREAM)
    Actual IP throughput achieved during the test was - 4023 kbps


Title: Re: BT Home Hub
Post by: kitz on December 11, 2007, 01:20:47 PM
>> he thinks I need a lift and shift. (what is this)

Move you to a different line card at the exchange



Quote
1. Best Effort Test: -provides background information.
IP profile for your line is - 3000 kbps
DSL connection rate: 448 kbps(UP-STREAM) 3744 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 2399 kbps 

Okay perhaps a little low - but about right - what isnt right is the TBB speedtest result.
indicating perhaps some sort of throttling with BT broadband.  Its interesting to note that the TBB speedtest is more in line with your assured rate.

Quote
Uptime: 0 days, 3:55:40
 
Bandwidth (Up/Down) [kbps/kbps]: 448 / 1,024

Something happened apprx 4 hours later which caused your router to loose sync with the exchange and the resync is at a much lower figure.  Loss of signal has increased by 2 therefore its obvious its occured twice, so you could have gone down in 2 separate stages.

This loss of sync is the root of your problem since that has immediately brought your IP profile back down again... and it could take a day or so to recover.


One thing that does occur at this time of year - xmas tree lights.   Does the router drop time co-incide with switching on any lights (or anything similar).
Title: Re: BT Home Hub
Post by: shape on December 12, 2007, 07:47:35 PM
Uh Oh!!!!
I had to ring high level complaints for some help with the voyager 2091 they sent me too try, to see if hub is at fault. (been at it since 5.00 p.m)
I can ping the router, not the internet.
But i was able to tell the router to perform a firmware update, which it did.
Anyway he told me my sync speed had not increased, i blamed the many connection/ reconnections i performed over an hour and a bit trying difo settings, and swopping between hub and 2091 to read up and try and get it working.
He says, wholesale will probably do no more for me, and i can think about a full refund and no service, or accepting the poor service i'm recieving, GULP!!

He couldn't even help me get the router working, i'm desperate to get it o work and stabilise my line, before i have to make that decision.
It can connect to internet, I just can't open any websites, nor ping em.
Please Please help :-)
Many thanks
Title: Re: BT Home Hub
Post by: shape on December 12, 2007, 10:15:45 PM
got the router on t'net.

Line Mode G.DMT   Line State Show Time 
 Latency Type Interleave   Line Up Time 00:00:42:14 
 Line Coding Trellis On   Line Up Count 4 
   
 Statistics Downstream Upstream 
 Line Rate 2368 Kbps 448 Kbps 
 Noise Margin 6.6 dB 21.0 dB 
 Line Attenuation 42.0 dB 20.0 dB 
 Output Power 18.4 dBm 12.1 dBm 
 K (number of bytes in DMT frame) 75 15 
 R (number of check bytes in RS code word) 16 16 
 S (RS code word size in DMT frame) 2 8 
 D (interleaver depth) 16 4 
 Super Frames 149027  149025   
 Super Frame Errors 15  0   
 RS Words 5066954  1266712   
 RS Correctable Errors 9758  18   
 RS Uncorrectable Errors 126  0   
 HEC Errors 12  0   
 OCD Errors 0  0   
 LCD Errors 0  0   
 ES Errors 0  0 


Just hope it starts climbing up.
Title: Re: BT Home Hub
Post by: mr_chris on December 13, 2007, 12:51:19 PM
Looks like you have some nasty stuff in your line somewhere :( I take it that because you've had an engineer's visit, that you've tried your routers in the master test socket etc?

For a line of 42dB attenuation you should be getting at least 6 Mb sync, especially with 6dB SNR margin. Hope you get things sorted out.
Title: Re: BT Home Hub
Post by: shape on December 13, 2007, 06:05:29 PM
Yer summit nasty on line mate.
Yer brand new master socket and drop wire fitted by bt
I syncd today at 3 meg at 6db, this held all day till it started getting dark.
Watched it like a loser till it lost connection,
resync'd at 2 meg at 9db,
Just hoping this holds through the night, as if it does, i don't think it will lose connection through day!
And it may stabalise.
Just waiting to see if wholesale will action a E side pair swop, there not interested in lift and shift.
Thanks for replying, your very kind :-)

Line Mode G.DMT   Line State Show Time 
 Latency Type Interleave   Line Up Time 00:01:01:14 
 Line Coding Trellis On   Line Up Count 8 
   
 Statistics Downstream Upstream 
 Line Rate 2048 Kbps 448 Kbps 
 Noise Margin 9.0 dB 21.0 dB 
 Line Attenuation 42.0 dB 20.0 dB 
 Output Power 18.3 dBm 12.1 dBm 
 K (number of bytes in DMT frame) 65 15 
 R (number of check bytes in RS code word) 16 16 
 S (RS code word size in DMT frame) 2 8 
 D (interleaver depth) 16 4 
 Super Frames 216073  216071   
 Super Frame Errors 46  0   
 RS Words 7346492  1836603   
 RS Correctable Errors 6399  0   
 RS Uncorrectable Errors 434  0   
 HEC Errors 42  0   
 OCD Errors 2  0   
 LCD Errors 0  0   
 ES Errors 0  0 

Title: Re: BT Home Hub
Post by: mr_chris on December 13, 2007, 08:15:23 PM
Well, the E side pair swap could help... this is the bit between your local green cabinet and the exchange, i.e. a significant proportion of your phone line.

To be honest, a "lift and shift" is only any good if the fault lies at the exchange (faulty line card in the DSLAM for example, which doesn't really happen all too often), as this involves putting your line onto a different DSLAM.

In the meantime try not to let it sync too often (easier said than done I know!) as your target SNR margin will continue to rise as there are more errors on the line. It looks like it's already risen to 9dB instead of 6dB, and it will stay there even when your fault is fixed. If you have a router compatible with the DMT tool you can tweak the target SNR margin down to get a bit more speed out of the line, but I wouldn't start playing obviously until your fault is resolved.

Good luck!
Title: Re: BT Home Hub
Post by: shape on December 14, 2007, 07:51:37 PM
Well, the E side pair swap could help... this is the bit between your local green cabinet and the exchange, i.e. a significant proportion of your phone line.

They did a E-side swop today.

To be honest, a "lift and shift" is only any good if the fault lies at the exchange (faulty line card in the DSLAM for example, which doesn't really happen all too often), as this involves putting your line onto a different DSLAM.

Resolutions just by chance phoned me whilst engineer was here fitting a rf3 filter, engineer actually took phone and spoke to resolutions telling him to monitor it over weekend, and if it continued to happen to order a lift and shift. So thats the second engineer recommending that, maybe they know something.

In the meantime try not to let it sync too often (easier said than done I know!) as your target SNR margin will continue to rise as there are more errors on the line. It looks like it's already risen to 9dB instead of 6dB, and it will stay there even when your fault is fixed. If you have a router compatible with the DMT tool you can tweak the target SNR margin down to get a bit more speed out of the line, but I wouldn't start playing obviously until your fault is resolved.

For the second day running I have watched the noise db dip slowly till it gets to about 3db and resync's.
This starts to happen at about half three, losing conection from five.
Today to rule out me, i had nothing but router on while i went out.


Good luck!
Title: Re: BT Home Hub
Post by: Tonus on December 22, 2007, 04:51:53 PM
Hi, first time poster here  :)

Sorry to hijack the thread, but I'm having a very similar problem.

On wednesday night, I noticed my broadband speed dropped to 0.7megs.  before, I was regularly getting between 3 and 4 and a half megs.  This happened for no apparent reason.  HTTP downloads and p2p downloads won't go above 14 kbps.  (incidentally, I notice on my p2p software, that I am not uploading and downloading at the same time anymore - I only upload when I'm not downloading).  Now my connection is even lower than that - various speed testers are giving me 0.1megs

I've tried a number of things suggested by this website (moving to master socket, removing orange wire from extension etc) to try and fix it.

I got this from the bt speedtester:

Test1 comprises of Best Effort Test:  -provides background information.
    IP profile for your line is - 135 kbps
    DSL connection rate: 448 kbps(UP-STREAM)  768 kbps(DOWN-STREAM)
    Actual IP throughput achieved during the test was - 95 kbps

and this from my home hub:

DSL Connection   

Link Information
         
Uptime:   0 days, 11:10:19
Modulation:   G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]:   448 / 768
Data Transferred (Sent/Received) [MB/MB]:   154.29 / 675.73
Output Power (Up/Down) [dBm]:   12.0 / 17.0
Line Attenuation (Up/Down) [dB]:   21.5 / 42.0
SN Margin (Up/Down) [dB]:   20.0 / 32.5
Vendor ID (Local/Remote):   TMMB / TSTC
Loss of Framing (Local/Remote):   0 / 0
Loss of Signal (Local/Remote):   7 / 0
Loss of Power (Local/Remote):   0 / 0
Loss of Link (Remote):   0
Error Seconds (Local/Remote):   51 / 0
FEC Errors (Up/Down):   0 / 171
CRC Errors (Up/Down):   0 / 6
HEC Errors (Up/Down):   0 / 5
Line Profile:   Interleaved

If anyone can make any sense of these figures, I'd really appreciate it.  I'm from Glasgow, and trying to get an Indian to understand my accent is nigh on impossible.  ???
Title: Re: BT Home Hub
Post by: mr_chris on December 22, 2007, 05:14:19 PM
Welcome to the forum, Tonus. :)

Basically, you have problems on your line.

Your SNR margin has gone to a really silly high level. I think the BT DLM system does that sometimes as an 'emergency measure' when all else fails.... or something. I don't really know as there isn't that much information about the finer details of how it works out in the wild.

So your SNR margin has been set really high, causing you to sync very slowly. Yet you're still getting errors. Loss of signal indicates 7 resyncs since you last rebooted your router. Seems like a lot.

Is your voice line ok? Do a quiet line test if they're still doable (dial 17070 and select option 2) and you can then hear if there's any crackling on the phone line. If there is crackling, then perhaps reporting a voice fault might be easier than reporting an ADSL fault. If you DO report a voice fault then don't mention anything about broadband.

Alternatively, write them an email instead, posting a copy of those line stats and say you have tried plugging in at the master socket with no other extensions etc etc.. and your line is still unstable.

Dunno really, it's a difficult one to sort out, especially as you have an accent barrier there too, so talking to the call centre is doubly difficult!
Title: Re: BT Home Hub
Post by: Tonus on December 22, 2007, 05:32:53 PM
Welcome to the forum, Tonus. :)

Basically, you have problems on your line.

Your SNR margin has gone to a really silly high level. I think the BT DLM system does that sometimes as an 'emergency measure' when all else fails.... or something. I don't really know as there isn't that much information about the finer details of how it works out in the wild.

So your SNR margin has been set really high, causing you to sync very slowly. Yet you're still getting errors. Loss of signal indicates 7 resyncs since you last rebooted your router. Seems like a lot.

Is your voice line ok? Do a quiet line test if they're still doable (dial 17070 and select option 2) and you can then hear if there's any crackling on the phone line. If there is crackling, then perhaps reporting a voice fault might be easier than reporting an ADSL fault. If you DO report a voice fault then don't mention anything about broadband.

Alternatively, write them an email instead, posting a copy of those line stats and say you have tried plugging in at the master socket with no other extensions etc etc.. and your line is still unstable.

Dunno really, it's a difficult one to sort out, especially as you have an accent barrier there too, so talking to the call centre is doubly difficult!

I did the quiet line test, and it is absolutely silent - no crackling or anything.  Even tried it from the extension which originally had the home hub, and that was silent too.
This is so frustrating, there is no apparent reason for this happening - it spontaneously decided it wasn't going to work, and it has just gotten worse.

The only thing that set wednesday night apart was that we had a particularly heavy frost - could that have done something to my line?
Title: Re: BT Home Hub
Post by: shape on December 23, 2007, 04:16:51 PM
Hi this is what I went through since 6/10/07.
My speed went down to 135k.
I'm getting better but no there yet.
The biggest improvement I got was replacing the home hub with a speedtouch 585 v6 router.
This will hold the line better with all that noise on your line, which meant for me less resyncs which force your speed down.
The hub just seems to resync first sign of noise.
Have you any other router?