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Standard User Merly
(regular) Thu 18-Apr-13 12:01:00
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New ADSL2 connection - Slower than my previous connection


[link to this post]
 
Hi,

I've just renewed my contract with BT and have been moved to the up to 16mb ADSL2 product, I always had a rock steady full 8mb connection (for 5 years until today), my Hub now reports G.992.5 annex A which I believe is ADSL2.

My speeds are now way below what I had before - only about 3 meg or so.
I know there is a 10 day training period, but I've only read about the speeds going down and not up during that time !

Can I expect my speeds to increase during the 10 days or get even worse ?
I presume I cannot contact BT until the 10 days are up ?

In case it helps my stats from the hub are:

Link Information

Uptime: 0 days, 0:25:05

Modulation: G.992.5 annex A

Bandwidth (Up/Down) [kbps/kbps]: 728 / 3,439

Data Transferred (Sent/Received) [MB/MB]: 16.93 / 341.91

Output Power (Up/Down) [dBm]: 9.5 / 0.0

Line Attenuation (Up/Down) [dB]: 10.0 / 22.5

SN Margin (Up/Down) [dB]: 11.0 / 29.0

Vendor ID (Local/Remote): TMMB / IFTN

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 / 0

CRC Errors (Up/Down): 0 / 0

HEC Errors (Up/Down): 0 / 0

Line Profile: Fast


Thanks for any advice.,
Administrator MrSaffron
(staff) Thu 18-Apr-13 12:04:26
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
The speeds might go up, but usually with BT the DLM works by starting off fast and then slowing down.

Lots of spare noise margin, well beyond any target margins. I would do a reboot of the router in another hour or so and grab the router stats as soon as they are available. To get a better idea of what target they are using.

No reason why the line should not run well beyond 8 Meg based on the stats shown.

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 MHC
(sensei) Thu 18-Apr-13 12:17:07
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
29dB of margin is why!

Hopefully that will come down rapidly unless there are noise spikes occurring on your line.

Wait a while longer and power off the modem and fully disconnect from the line. Wait for a few minutes (3 minimum, 10 or more to be safe) to allow the DSLAM to forget. Power up the modem until it is fully booted and then connect to the line. Do it just once as several in succession can suggest to the DLM there is a problem.

Check stats and report back.

Might also be worth getting Router Stats Lite running to see how/when any re-syncs and changes occur.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit


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Standard User Merly
(regular) Thu 18-Apr-13 13:40:15
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Re: New ADSL2 connection - Slower than my previous connectio


[re: MHC] [link to this post]
 
Thanks for your replies, I have done as you suggested but no difference, here are the stats after leaving the modem off for 30 mins and reconnecting the line:

Link Information

Uptime: 0 days, 0:00:56

Modulation: G.992.5 annex A

Bandwidth (Up/Down) [kbps/kbps]: 731 / 3,207

Data Transferred (Sent/Received) [KB/KB]: 79.00 / 148.00

Output Power (Up/Down) [dBm]: 9.5 / 0.0

Line Attenuation (Up/Down) [dB]: 10.0 / 22.5

SN Margin (Up/Down) [dB]: 11.5 / 29.5

Vendor ID (Local/Remote): TMMB / IFTN

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 / 0

CRC Errors (Up/Down): 0 / 0

HEC Errors (Up/Down): 0 / 0

Line Profile: Fast
Standard User MHC
(sensei) Thu 18-Apr-13 14:16:15
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
Sit and wait unfortunately. BT will not touch it until the 10 days is up unless you can persuade them it is a fault.

Get Router Stats Lite running and monitor the sync and SNR. If you have a BT Hub you will need the specific HH version though.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User Merly
(regular) Thu 18-Apr-13 14:36:18
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Re: New ADSL2 connection - Slower than my previous connectio


[re: MHC] [link to this post]
 
I'm pretty sure it must be a fault as it has worked perfectly for 5 years and the day they change it to ADSL2 it halves my speed frown

The 10 day wait is a pain, but maybe it will correct itself.
Standard User MHC
(sensei) Thu 18-Apr-13 14:46:13
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
As I say, get RSL running and store the plots. Run some TBB and BT speed tests and log the results so you have everything ready for day10, if you need it.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User Merly
(regular) Thu 18-Apr-13 14:51:42
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Re: New ADSL2 connection - Slower than my previous connectio


[re: MHC] [link to this post]
 
I'd rather not get into all that, basically BT have signed me up for another year and effectively halved my speeds when they said I would get almost double, not very happy at all - also I have BT Vision, not sure if that will carry on working if my speeds drop any lower.

Everything was fine as it was, really beginning to wish I'd stayed as I was.

Thanks for your help though, its appreciated, I spoke to the Indian call centre and he really didn't seem to understand what I was talking about, didn't even seem to know what ADSL2 was !
Standard User Merly
(regular) Thu 18-Apr-13 15:13:37
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
Hmm weirder and weirder - visiting http://www.bt.com/help/servicestatus and putting in my phone number gives a broadband fault on my line that was reported on 15 April, which was the day I renewed my contract with BT(????). - it says the fault is on BT Retail Servers.
Standard User johnjburness
(eat-sleep-adslguide) Thu 18-Apr-13 15:20:15
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Re: New ADSL2 connection - Slower than my previous connectio


[re: Merly] [link to this post]
 
I fully understand your "pain", particularly when you get put through to some non-understanding Call-Centre Operator.

Can I suggest that you contact BT via:- http://bt.custhelp.com/app/contact_email/c/4950

This will get you through to a more "knowledgeable" set of contacts!

Regards,
John
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