very low throughput and interleaving question

Hi all

I've been with bt for a couple of years on option 3 with no major problems(the occasional low sync etc)

but 2 weeks ago I started to get loads of disconnects. and then a vey low speed.since then I have been stuck connecting at 145k on all tests. although I'm synced at 3776k. I raised this with india about 10 days ago. to no avail. I then rang them 2 days ago and was told it was fixed. but he wouldn't tell me what he'd done. and to wait an hr. I did that, and then rang back, to be told it'd take 4 hrs so I waited. rang back and was told it would take 24hrs. so I've waited 48hrs since then with no improvement. I realise that it could take 1-5 days or even 10-14days to get an improvement.......Am I just being impatient? It has been 14 days since I started having problems. I removed all extra wiring in the house, removed all cordless phones. and even disconnected the bell wire. So now I just have the hub wired into master faceplate and 1 phone plugged in.

The speedtester.bt.com won't even finish its test. either fails at the start. or fails to initialise an assured rate test. It does tell me that my throughput for the test is 135k but I haven't seen any stats.

on another note I have asked for interleaving to be switched off due to high ping rates over the last couple of yrs and unusable online gaming. is this wise on a fairly long line? (3km) My speeds when the adsl is working is 3mb average.

do these stats look ok?

Line state Connected
Connection time 0 days, 0:22:45
Downstream 3,776 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 / 18.0 dB
Line attenuation (Down/Up) 53.0 dB / 30.0 dB
Output power (Down/Up) 19.6 dBm / 11.9 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 452 / 0
CRC Errors (Down/Up) 1 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 1

SNR looks like its gone to the highest level BT do...

I'm suprised with 53 attenuation your getting a 3776 sync thats very close to the max you would get - in practise 2.5-3 is much more usual.

If your on 135kbit profile then something got jacked... it should rise automatically within a couple of days of holding a higher stable sync otherwise its stuck and you need to get BT to reset DLM - which for some reason they are reluctant to do - "oh noes the computer can't be wrong".

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Edited by Rroff (Wed 01-Jul-09 14:52:06)

yeah line is unbelievably good. have on occasion had 500k+ download and stable as well for a few weeks. though normal is 300-400k. I'll try and be more patient. but I have been for 10+days and its starting to wear thin. They are supposedly working on it and will ring me in the next 14hrs and it 'will' be sorted in the next 48rs. I won't be holding my breath tho'

thanks for the reply

Rob

Is this something I can help you with? PM me your details and I will be look into this.

Cheers

David BT Support,

David,

Thank you for your kind offer. but an engineer called out today( even though I told 'india' that the line came up yesterday. they insisted on an engineer. strange that all I wanted was for them to unstick my profile, which they said they did yesterday. I'm no techy but I have been telling them this for 10days. and sent an engineer after they fixed it.....

The engineer was excellent, a credit to bt. he changed the faceplate and box, renewed the cabling that ran round the facia of the house and renewed a v v old joint box on the gadle that was v damp inside, even tho' t hasn't rained for 3 weeks. this may explain that every time it rains I lose adsl speed and get disconnected on a regular basis.

He did however say that there was 6meg leaving the exchange. Why is it not 8meg??? as that is what I pay for 'up to 8meg', surely if they only kick out 6mb then even if I lived in the exchange the theoretical top speed would always be 6meg......

I don't want any refund or get into any arguement over speed I think I'm entitled to. I'm just really curious if this is a common occurence. as I've never come across it. He did tell me that he'd expect with line length etc taken into account that I should get 4.5-5mb. I get 2-3mb......

now if only I could get india to switch off the interleaving which they have promised me 5 times in 10 days and never happens. even to the point they promised me at 4pm it would be done by 7pm tonight and I would get a call to let me know it had been done.................patience is a virtue.

thanx again

Rob

ps its north tamerton exchange on the devon/cornwall border. If you could nip down there and turn the dial up to 8mb I'd really appreciate it

I'd see David about getting that interleaving turned off, I'm sure it would be well within his teams calibre.

As for "turning the dial up to 8mb" it's not really possible. The up to 8mb makes it sound good when you buy. I mean if BT get your superfast 128k-8meg broadband today, you'd complain well what speed am I going to get? The checker @ http://www.productsandservices.bt.com/consumerProduc... will give you an idea of the speed to expect. This could now be out of date as you have just had work done to your line which by the sounds of it will drastically improve your speed.

Line speed is a fickle thing, I used to sit at 4.5 after a lift and shift I now sit at just below 8000kbps despite the fact I'm around 1-1.5 miles from the exchange as the crow flies!

Paul

thanks for the reply, Yeah I know exactly what you mean about the selling point being 'up to 8mb' and I realise its line length/quality dependant. I had just never heard of an exchange only putting out 6mb. I assumed they always ran at 8mb and then what you get your end is a reduced percentage of this

on a different not. my homehub is still stating the latency type is interleaved. I've just spoken to India who told me that my interleaving is off, he said that the engineer did it at the exchange. The engineer said he didn't. India said to ignore the homehub.....

Can I do anything to check whether hes telling the truth.

my stats

ADSL line status
Connection information
Line state Connected
Connection time 0 days, 0:11:29
Downstream 3,776 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 / 18.0 dB
Line attenuation (Down/Up) 52.0 dB / 29.5 dB
Output power (Down/Up) 19.1 dBm / 12.1 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 467 / 0
CRC Errors (Down/Up) 0 / 2147480000
HEC Errors (Down/Up) nil / 0
Error Seconds (Local) 0


is there any expected improvement. as I said b4 I'm no techy but not stupid either. and don't understand the stats to any great degree but thought the noise margin was ideal at 6db am I wrong?

Sorry for the questions, but would like to get the best from my line and also stay with bt. but this whole debarkle with the call centre is making me think otherwise. I am out of contract

thanks for the help

Rob

Edited by robzki (Sat 04-Jul-09 11:19:17)

Do a tracert to bbc.co.uk

If the first hop after your router is below 30ms then your on fast path if its 30+ then your on depth 1 interleaving if 60+ (not sure if BT do it) then its on depth 2 interleave.

Also since the WBC upgrades BT's internal system seems to be having problems getting the correct profile data from the MSAN, tho it looks like your not on WBC yet. So the data they are getting might be showing the connection as being on fastpath and a totally different sync to what your actually on.

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Tracing route to bbc.co.uk [212.58.254.252]
over a maximum of 30 hops:

1 18 ms 100 ms 99 ms BThomehub.home [192.168.1.254]
2 35 ms 35 ms 39 ms 213.123.109.58
3 33 ms 34 ms 34 ms 213.123.109.161
4 35 ms 34 ms 33 ms 217.41.220.170
5 35 ms 45 ms 34 ms 217.41.169.25
6 45 ms 35 ms 35 ms 217.41.169.66
7 41 ms 36 ms 34 ms 217.41.169.134
8 34 ms 34 ms 34 ms 217.41.169.38
9 36 ms 34 ms 35 ms 217.47.144.49
10 35 ms 34 ms 33 ms core1-pos4-1.reading.ukcore.bt.net [194.72.0.193
]
11 37 ms 36 ms 36 ms core1-pos0-8-0-11.ealing.ukcore.bt.net [194.74.6
5.193]
12 36 ms 35 ms 36 ms core1-pos5-0-0.telehouse.ukcore.bt.net [194.74.6
5.122]
13 36 ms 37 ms 36 ms 194.74.65.42
14 36 ms 37 ms 38 ms 212.58.238.129
15 36 ms 36 ms 36 ms rdirslb0.thdo.bbc.co.uk [212.58.224.136]
16 37 ms 36 ms 35 ms virtual3.rbsov.bbc.co.uk [212.58.254.252]

Trace complete.