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Standard User alex98uk
(newbie) Tue 21-Jun-11 20:31:03
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Constant drop outs, poor speeds and high attenuation


[link to this post]
 
So, we are with the Post Office who are leasing the line from BT. I am connected to the Poplar exchange which I know to be overcrowded, yet I believe the troubles I have go deeper than that.

At seemingly random times in the day, the Internet will just drop out. The phone line and internet light on the router disappears altogether. Devices remain connected to the router, but there is just no net.

I rang Post Office and they say all their stats seem fine, but they can see that we are dropping out. For example, at 8.50am this morgen, we dropped in and out 30 times consecutively. They have said we can have an engineer, but if he comes and finds nothing, i'll be £126 poorer. Because the problem is intermittent, i'm stuck between a rock and a hard place. Do I book an Engy and risk it all works fine on the day and pony up £126 or live with awful net?

I am trying to collect stats as proof (such as dropout times), speeds and line stats. I retrieved these at 7pm GMT today. Do you see much wrong (apart from the catastrophically low speeds)? I am pinging from London to London.

Ping: 167ms
Download Speed: 0.05Mbps
Upload Speed: 0.02Mbps

noise margin upstream: 22 db
output power downstream: 19 db
attenuation upstream: 28 db

noise margin downstream: 16 db
output power upstream: 12 db
attenuation downstream: 52 db


I can provide a full log if needs be. Please help me!

Edited by alex98uk (Tue 21-Jun-11 20:36:32)

Standard User coldnebraskablue
(learned) Tue 21-Jun-11 20:54:18
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
Can you provide a bit more information?
Eg:

Exactly what Post Office service are you on?

How long have you had the service, and has it always been like this (speed and drop-wise)? Have you changed anything in your house recently (new phone/sky box/ alarm system) that might have caused it?

Have you tried different filters, to make sure one of those hasn't popped?

Is your router connected to the BT master socket? If so, have you tried disconnecting the face plate to the master socket (carefully) and running directly from the test socket underneath? (this will attempt to rule out any wiring in your house)

These are some of the things an ISP might ask you anyway....
Standard User alex98uk
(newbie) Tue 21-Jun-11 21:19:37
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Re: Constant drop outs, poor speeds and high attenuation


[re: coldnebraskablue] [link to this post]
 
In reply to a post by coldnebraskablue:
Can you provide a bit more information?
Eg:

Exactly what Post Office service are you on?

How long have you had the service, and has it always been like this (speed and drop-wise)? Have you changed anything in your house recently (new phone/sky box/ alarm system) that might have caused it?

Have you tried different filters, to make sure one of those hasn't popped?

Is your router connected to the BT master socket? If so, have you tried disconnecting the face plate to the master socket (carefully) and running directly from the test socket underneath? (this will attempt to rule out any wiring in your house)

These are some of the things an ISP might ask you anyway....


Well... we have been with the PO since last October I believe. This is a rental property and I have taken a room from a previous tenant, but having visited before, the problems have been bad since day 1, but the folks living there did nothing about it. It's only getting seen to since I work in IT and use my PC a lot and need the net!

I believe we are on the Broadband Extra plan, which is I think up to 8mb/s and unlimited. The PO said we should expect 5mb/s-6mb/s on our line. Since moving in, I have added an iPlate to the phone line in order to reduce line noise and changed the ADSL filters, but to no avail. Other than that, nothing has changed, we have very little stuff in the house other than laptops and mobiles.

I believe we are on the master socket (as it is the only one that works), although it is bizarre as it comes in at the back on the house (which does not face the road). Common sense would dictate it terminates in a front room, closer to the road. The socket we are on though, only has one plug, I was under the impression it would have a main plug and secondary test plug under the face plate.

Any help!?


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Standard User Rockh
(eat-sleep-adslguide) Tue 21-Jun-11 21:28:56
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
Need the proper line stats from the router, your downstream noise margin is very high unless you are on a fixed speed 0.5meg package.

Dave
Standard User alex98uk
(newbie) Tue 21-Jun-11 22:06:11
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Re: Constant drop outs, poor speeds and high attenuation


[re: Rockh] [link to this post]
 
In reply to a post by Rockh:
Need the proper line stats from the router, your downstream noise margin is very high unless you are on a fixed speed 0.5meg package.


OK, well we are on Broadband Extra which according to the PO should be:

"Up to 8Mbps broadband and unlimited monthly downloads."


According to the O2 site, on my phone number and post code:

On this number you'll get a download speed of around 5.5 meg.


Full stats

[ SAR Counters ]
inPkts = 0x000f1aed, inDiscards = 0x00000018
inF4Pkts = 0x00000000, inF5Pkts = 0x00000001
inDMATaskEnd = 0x00000000, inBufErr = 0x00000000
inCrcErr = 0x00000007
inBufOverflow = 0x00000001, inBufMaxLenErr= 0x00000000
inBufLenErr = 0x00000010, inBufDescrOV = 0x00000013
outPkts = 0x000e5d97, outDiscards = 0x00000244
outF4Pkts = 0x00000000, outF5Pkts = 0x00000001
softRstCnt = 0x00000000
DSL Line Status:
noise margin upstream: 21 db
output power downstream: 19 db
attenuation upstream: 28 db
tone 0- 31: 00 00 00 04 57 78 88 88 88 88 87 77 66 55 42 00
tone 32- 63: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 64- 95: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 96-127: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 128-159: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 160-191: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 192-223: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 224-255: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 256-287: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 288-319: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 320-351: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 352-383: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 384-415: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 416-447: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 448-479: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 480-511: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
noise margin downstream: 17 db
output power upstream: 12 db
attenuation downstream: 52 db
tone 0- 31: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 32- 63: 00 00 03 44 56 67 88 89 99 99 aa ab ab ab bb ba
tone 64- 95: 0b aa aa aa aa aa 9a aa aa 99 aa aa a9 aa aa aa
tone 96-127: aa 99 98 99 99 99 99 99 99 89 99 99 99 99 88 87
tone 128-159: 52 36 78 89 99 98 89 99 99 89 99 98 78 99 88 88
tone 160-191: 75 88 66 60 56 77 76 77 63 57 78 88 78 88 77 66
tone 192-223: 57 77 77 67 45 55 55 54 30 00 00 22 22 22 00 00
tone 224-255: 00 00 22 33 33 32 20 00 00 00 00 00 00 00 00 00
tone 256-287: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 288-319: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 320-351: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 352-383: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 384-415: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 416-447: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 448-479: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 480-511: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DHCP: Server
IP Pool Starting Address: 192.168.1.33
Pool Size: 32

ZyNOS Firmware Version: V3.40(BOD.0)D0 | 12/28/2009

WAN Information:
DSL Mode: ADSL_G.dmt
IP Address: xx.xxx.xxx.xxxIP Subnet Mask: 255.255.255.255
Default Gateway: N/A
VPI/VCI: 0/38

LAN Information:
IP Address: 192.168.1.1
IP Subnet Mask: 255.255.255.0
Standard User alex98uk
(newbie) Wed 22-Jun-11 19:02:44
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
Hi, just a small bump as I am trying to figure this out before I call an engineer. Any more info I can provide to help?
Standard User coldnebraskablue
(learned) Wed 22-Jun-11 19:42:40
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
Not sure I can offer anymore I'm afraid, as someone else mentioned the noise margin does look high, as does the downstream attenuation. There's an explanation of attenuation here, which might help to explain the lower speed (but not necessarily the drops):

http://www.kitz.co.uk/adsl/linestats.htm#attenuation

Do you know if you are a long way from the exchange?

Edited by coldnebraskablue (Wed 22-Jun-11 19:45:17)

Standard User alex98uk
(newbie) Wed 22-Jun-11 20:29:34
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
I am not sure how far I am away really, I just know it's hugely over-populated. I would expect low speeds at peak time... but i'm fairly sure that 5kb/s is outrageous.
Standard User Apprentice
(knowledge is power) Thu 23-Jun-11 09:58:05
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Re: Constant drop outs, poor speeds and high attenuation


[re: alex98uk] [link to this post]
 
What stats do you get back from the BT Performance Tester?

The newer master sockets have a TEST socket within them, which should be used if it's there (when testing) as this can highlight any problems with the house wiring and any extensions in other rooms.

Is the router wired (ethernet cable) to the PC as opposed to using a wireless connection?
Have you tried another router in case there are any issues with the one in use e.g. overheating ..... does it feel very hot?

Alastair

omadasafisho
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