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aglet
Contributor
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Message 11 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Just to update this

 

1. I've monitored the hub and the longest connection has been 3 days..

 

2. Ran the BT trouble shooter and that suggested an engineers visit which was arranged for 24th. Subsequently contacted by BT to say they had found a fault in their broadband network and so wouldn't need to visit house. Repair scheduled for completion 24th but still shows as ongoing on my BT account. Just online chatted to check progress and they say the "MSO has been cleared" but couldn't explain why there is an ongoing fault registered. They are now suggesting BT Tech Experts.....

 

3. Can't run the quiet line test as my master socket doesn't have the necessary internal socket

 

Any suggestions? Should I insist on an engineer visit?

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Boudges
Aspiring Expert
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Message 12 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Which of these looks like your master socket?

 

nte5_001.jpgnte5_002.jpgnte_001.jpg

 

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aglet
Contributor
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Message 13 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

The one on the right..though it got two sockets...took cover off but no socket inside..

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Boudges
Aspiring Expert
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Message 14 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Run the quiet line test anyway it doesn't nessercarily need to be connected to the test socket but it just eliminates any internal wiring problems if there are any

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aglet
Contributor
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Message 15 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Tried the quiet line test and line ok...

 

Just checked mybt account and the fault registered for resolution last Thursday is shown as still ongoing contrary to what I was told online yesterday... so who is right?

 

I looked at this http://aaisp-btmso.blogspot.co.uk/  and couldn't see any MSO in my location area since 12th... which is what the online chatter said was the problem..

 

Hub showing download 287 mbps and upload 994 mbps .. been like that since 12th...

 

What can you suggest?

 

 

 

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Distinguished Sage
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Message 16 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

These speeds at not possible Hub showing download 287 mbps and upload 994 mbps .. been like that since 12th...
 I think you are miss reading something please post the hub helpdesk page
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aglet
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Message 17 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Mistype should be kbps not mbps

 

1. Product name:BT Home Hub
2. Serial number:+068543+NQ41152759
3. Firmware version:Software version 4.7.5.1.83.8.204.1.11 (Type A) Last updated 01/07/15
4. Board version:BT Hub 5A
5. DSL uptime:0 days, 01:08:43
6. Data rate:994 / 287
7. Maximum data rate:20524 / 3240
8. Noise margin:6.5 / 25.5
9. Line attenuation:16.3 / 35.0
10. Signal attenuation:16.3 / 32.2
11. Data sent/received:1.4 MB / 11.7 MB
12. Broadband username:bthomehub@btbroadband.com
13. BT Wi-fi:Yes
14. 2.4 GHz Wireless network/SSID:BTHub5-8P82
15. 2.4 GHz Wireless connections:Enabled (802.11 b/g/n (up to 144 Mb/s))
16. 2.4 GHz Wireless security:WPA2
17. 2.4 GHz Wireless channel:Automatic (Smart Wireless)
18. 5 GHz Wireless network/SSID:BTHub5-8P82 5GHZ
19. 5 GHz Wireless connections:Enabled (802.11 a/n/ac (up to 1300 Mb/s))
20. 5 GHz Wireless security:WPA2
21. 5 GHz Wireless channel:Automatic (Smart Wireless)
22. Firewall:Default
23. MAC Address:34:8a:ae:c8:45:d2
24. VPI/VCI:0 / 38
25. Modulation:G.992.5 Annex A
26. Latency type:Interleaved
27. Software variant:AA
28. Boot loader:1.0.0
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Distinguished Sage
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Message 18 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Why has my speed suddenly dropped?
 
ADSL connections (see notes about Infinity at the end), and the notes by RogerB
Changes in your connection speed are automatically managed by the exchange equipment, using a process called
Dynamic Line Management (DLM).
Its purpose it to give you the best speed possible, without introducing a lot of errors back into the BT network.
These errors impact on other users, and can slow their connection down, as your data packets have to keep being resent.
This is a continous process, but certain things can cause it to make drastic changes to your connection speed.

These can include the following:-
You could have also been recently moved from ADSL max to ADSL2+, this would mean that the line
would have to re-train again, and must be left undisturbed  for at least 10 days.
 
If you keep restarting or disconnecting your BT Home hub, then the exchange equipment will see this as a fault condition, and reduce your connection speed, in an attempt to stabilise your line.
You have recently had a fault on your line which has just been fixed.

Sometimes a single interruption to your line can cause this too, especially if it generates a large error burst.
The effect is that you get placed in a low banded speed profile, and you will notice that your downstream margin is high, usually over 15dB.
 
The lower the banded speed profile, the quicker it will recover, but it could take up to a month before the fullspeed is recovered.

If you want your speed to recover, then these are the steps you need to take.
 
DO NOT restart or disconnect the power to your BT Home Hub.
DO NOT disconnect your BT Home hub from your phone line.
 
Leave everything alone for at least 10 days, so that the exchange can record a stable connection.

During this time, the exchange may drop the connection, and re-establish a faster connection.
If you use the BT Speedtester, then do not restart the BT Home Hub, even if it tells you to.
If after 10 days your speed does not increase, then please return to your forum post.
showing  that you have 10 days of connection time, then the problem can be escalated.

You can calculate your final speed by using this website.

Maximum speed calculator
 
Infinity connections
A similar process is applied to the connection between the Infinity cabinet, and the Openreach modem.
You cannot view that connection information, but the same thing applies, do not restart or disconnect the Openreach modem.
The BT home hub only acts as a router, and restarting it will not affect your physical connection speed to the cabinet.
Additional information by forum member RogerB
BT broadband is line adaptive, if you have a good line, you get good broadband , BUT consider this, you only get good broadband
 
from the outset, if you let the exchange "train" the connection, when it is new, simply because it has to try various methods of modulation.
 
And once it is running at full speed and set the MSR (maximum stable rate) provided you don't keep disconnecting the router, it will stay that way.
 
So two important things:  ALWAYS leave the router on, 24/7 and DO NOT impede the training process which can take up to 10 days.
 
The reasons are vaguely the same for both scenarios:  DLM trains the connection during setup, and DLM runs the connection in a similar but different mode once it's running.
 
And the most common issue apart from line faults in causing poor broadband is FREQUENT RESETS and DISCONNECTIONS of the router or hub, because if you interupt line management it will demote the line profile if done to excess, with often time consuming efforts and long waits to get it back.
 
BT don't punish users indiscriminently by making them wait for their broadband speed to come up, but the line management is in place  to DEFEND the network against bad and corrupted data, and if the exchange sees your line being reset too often it assumes a fault,
whereby your linespeed is demoted, and often profoundly so.
 
Also, because the exchange can't tell the difference between you messing around resetting all the time, and a real line fault, it assumes (using logic) the worst and demotes the line profile.
 
If you get a real line fault and the noise margin increases, the linespeed will decrease, it's normal, again it's a defence to help give you a service  allbeit a depleted one, and at the same time stop corrupted data getting back to the exchanges.
 
But unfortunatlely it's at this point when people in general start to become frustrated,  and guess what?
 
They then start to reset the router in an attempt to "repair" the connection. And in doing so, impede the line management from promoting the linespeed again. (providing any fault is or was fixed).
 
And to summarise, if the connection is left to run unimpeded, no excess resetting, and left to its own devices, it actually benefits from the good line

history that the exchange has accumulated for your connection, simply because the attention span by the line management is not so profound when it does bite the dust, for whatever reason.
 
So regardless of the opinions of some, switching off broadband routers is NOT a good idea, not if you want consistent broadband and a good line rate.
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aglet
Contributor
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Message 19 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Update...I've not switched the router off but max connection has been 3 days and the speed was still as slow after that time.

 

The fault found by BT - resgistered 20th Nov - was supposed to be fixed by 24th but wasn't. I was then told it would fixed on 4th Dec. Still in progess as I write..

 

Latest I've been told is " ...is likely to be fixed by 07/12/2016 they are still monitoring the line "  Online chatter seem certain but I'm not convinced. Does it normally take this long?  Do they need to monitor a line for over 2 weeks?

 

If this isn't fixed on Wednesday what do you suggest next???   thx...

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Distinguished Sage
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Message 20 of 36

Re: Download Speeds Dropped Dramatically - Broadband Fault Not Fixed

Fix times vary depending on the type of fault
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