topic Re: Broadband Very slow and very irritating! in Archive

Broadband Very slow and very irritating!

JacobB — Tue, 19 Apr 2011 19:27:40 GMT

Hi. following a problem with BT in regards to moving the broadband to a new address/telephone number which took a long time. An a lot of phone calls.

We are now facing unstable and unacceptable broadband performance. I understand 10 days of tests is done, it's now been 12 days and it has Not calmed down. I'm getting download speeds of 1.5 kb to 12 kb.

Router stats below.. Speed tests indicate speeds of anything from 0.56mb to 1.67 mb download and 0.97mb

BT if it's not to much hard work for you, wouldn't be able to sort this out. Because it is very frustrating and not funny at all.

Modem Type: Built in modem - ADSL
DSL Line (Wire Pair): Line 1 (inner pair)
Current DSL Connection:
Down Up
Rate: 17317 kbs 1112 kbs
Max Rate: 16397 kbs 1112 kbs
Noise Margin: 3.8 dB 6.0 dB
Attenuation: 18.5 dB 6.0 dB
Output Power: 20.5 dBm 11.4 dBm

Protocol: G.DMT2+ Annex A
Channel: Fast
DSLAM Vendor Information Country: {46336} Vendor: {IFTN} Specific: {48753 }
ATM PVC: 0/38

Rate Cap: 16397 kbs
Attenuation @ 300kHz: 18.5 dB
Uncanceled Echo: -11.7 dB Ok
VCXO Frequency Offset: -48.8 ppm Ok
Final Receive Gain: 6.5 dB Ok
Excessive Impulse Noise: 1 More Impulse Noise Protection Recommended

Can somebody tell me how to sort out Impulse Noise Protection please? would BT be able to sort it out with a engineer visit.?

Thanks

JacobB

Re: Broadband Very slow and very irritating!

markp — Wed, 20 Apr 2011 07:09:33 GMT

Hi JacobB,

have you contacted the business technical helpdesk to report the problem with your broadband speeds, their contact details can be found here.

Markp

Re: Broadband Very slow and very irritating!

MHC — Wed, 20 Apr 2011 09:46:52 GMT

Impiulse noise - that is in general outside BTs control. If the ambient noise level increases and it can be hundreds of items that cause it then teh line performance will change. In a most cases the change is gradual and slight so the effect on te line is small.

However, if there is a large change in noise - a large burst for example then the router will see this and compensate/readjust. An example could be a back up generator, or a noisy electric motor being used close to a BT street cabinet or above a cable duct.

Two examples I have seen: A friend of a friend asked if I could have a look at their broadband as it was dropping out from early evening through to just after midnight, some nighgts. Their neighbours were having problems too. He left me there when he went to work - about 1/2 mile away and said, when you are hungry come down for a kebab (he had a mobile takeaway stand). After about 30 minutes the circuit dropped and restablished at a very slow speed. I walked down teh road and there he was, in the layby with his generator right next to the cabinet. The reason it was only some evenings was that his location in the layby varied.

Secondly, when repairing a road and footpath the workment put their compressor right against pole - killed all broadband to the 8 houses served from that pole.

Are either of those BTs fault? No.

Re: Broadband Very slow and very irritating!

JacobB — Thu, 21 Apr 2011 13:09:16 GMT

Hello.

I decided to swap the bt business hubs over. BT sent me the new hub. So swapped it over to the 2700hgv And it seems to me doing a better Job. don't know if the new one is faulty or just doesn't like my connection.

My line speed has increased to 6.89 mbps download and 0.97 mbps upload.

I have reported a possible fault with BT no fault has been found on the phone line.

It seems my problem is that the Broadband doesn't find a stable speed. and just keeps training it's self, The router displays 10 mbps but testing speed via speedtest brings a much lower speed, sometimes as low as 0.89 mbps

The stats:

DSL DetailsDownUp

Modem Type:	Built in modem - ADSL
DSL Line (Wire Pair):	Line 1 (inner pair)
Current DSL Connection:

Rate:	10861 kbs	1160 kbs
Max Rate:	12697 kbs	1164 kbs
Noise Margin:	10.8 dB	6.3 dB
Attenuation:	16.6 dB	5.9 dB
Output Power:	18.1 dBm	11.3 dBm

Protocol:	G.DMT2+ Annex A
Channel:	Fast
DSLAM Vendor Information	Country: {46336} Vendor: {IFTN} Specific: {48753 }
ATM PVC:	0/38

Rate Cap:	12697 kbs
Attenuation @ 300kHz:	16.6 dB
Uncanceled Echo:	-18.8 dB	Ok
VCXO Frequency Offset:	-3.3 ppm	Ok
Final Receive Gain:	-0.9 dB	Ok
Impulse Noise Comp. Tones:	29	Suspicious - impulse noise detected
Excessive Impulse Noise:	0	Ok

I would really like some solution to be found, Any suggestions.?

Re: Broadband Very slow and very irritating!

MHC — Thu, 21 Apr 2011 13:58:37 GMT

Again there is an Impulse noise warning.

On one of the router pages it is possible to get a bin loading plot ... can you do a few screen dumps to shop that and then host them so we can see. One when you have a slow speed event would be useful too.

It does sound as though something, outside of BTs and your control, is affecting the line.