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Aspiring Contributor
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Message 1 of 11

New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

My broadband has just been changed to ADSL2+ and now connects with downstream speeds of around 1400 to 1800 kbps. It previously connected at around 6900 to 7200 kbps with ADSL MAX.

 

I have a BT Home Hub 1.

 

Any suggestions?

 

The current connection stats are below:

 

Modulation:G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]:444 / 1,810
Data Transferred (Sent/Received) [MB/MB]:8.51 / 76.25
Output Power (Up/Down) [dBm]:12.0 / 0.0
Line Attenuation (Up/Down) [dB]:24.5 / 40.5
SN Margin (Up/Down) [dB]:21.0 / 32.0
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
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10 REPLIES 10
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Recognised Expert
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Message 2 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

Hi badger256, Welcome to the Forums.

 

If you have just been connected, you will be in the 10-day training period.

 

During this period, your line speed will increase gradually as the MSAN finds the most stable speed for your line - It is perfectly normal.

 

Give it 10 days and if it hasn't improved, post back 🙂

 

I hope this helps

___________________________________

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Aspiring Contributor
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Message 3 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

My exchange was upgraded about a month ago to adsl2+, my downloadd speed has dropped and fluctuates more..

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Distinguished Sage
Distinguished Sage
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Message 4 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

there are reports on the forum that the HH1 does not work well with adsl2+ ( there are others who say it works fine)  I would suggest you try and get another router either by phoning India CS or if you can borrow another router to confirm that is the problem



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Aspiring Contributor
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Message 5 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

 

Spoiler
 

 

 

Thanks for the reply. BT really ought to supply this advice when the line is switched. It's frustrating that the SN margin is set so high initially - it's creeping down now - when the ADSL MAX connection has been stable for nearly 5 years at much higher speeds.

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Distinguished Sage
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Message 6 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

Hi once your line has stabilised and your noise margin has reduced to the default 6 you should be able to achieve a 13mb + connection
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Aspiring Contributor
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Message 7 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

The 10 day period has passed and I still have just a quarter of the downstream speed I had before the ADSL2+ "upgrade" and a very high SN margin. In addition the upstream speed has halved during the supposed training period.

 

I notice that another poster, 21CENT, had a similar issue fixed by replacement of a HH1 with a HH3.

 

I've tried the silent line test and it was indeed silent.

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Distinguished Sage
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Message 8 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

Hi
I suggest you contact the forum mods and ask them to reset your noise margin then see if you need a replacement hub they should be able to get that sorted for you this is a link to them
http://bt.custhelp.com/app/contact_email/c/4951
they normally reply by email or phone directly to you within 72 hours

They are a UK based specialist team who have a good record at getting problems solved
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Distinguished Sage
Distinguished Sage
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Message 9 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

as I said already The HH1 is known to have problems with adsl2 and changing the router will help if not solve your speed problem  There are other posts similar to yours which were solved by changing the router



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Aspiring Contributor
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Message 10 of 11

Re: New ADSL2+ connection is only a quarter of the speed of old ADSL MAX

This is finally sorted now.

 

I contacted the mods and my connection was reverted to ADSL MAX. After a couple of days it was again changed to ADSL2+ with similar problems.

 

I contacted the mods again after the 10 day period had expired and my HH1 was reset remotely and reconnected with a 6.5db noise margin and around 8000kps/1100kbps downstream/upstream speed.

 

So it seems my HH1 is fine with ADSL2+ it just doesn't work well with the 21CN line noise measuring system.

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