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Is there any line noise? Dial 17070 option 2 should be silent and best with corded phone
Try a single disconnect of the DSL input, for about 20 seconds, and see if the line corrects itself when you reconnect it, as it could just have been a burst of interference which causes the profile change.
Thanks guys - It's been like this for a few days.
When you say to do a single DSL disconnect, do you mean turn the router off for 20 seconds? Or do something from the online control?
Will try the quiet line test tomorrow when I can get my corded phone back from next door!
Ok I've done that. Amazed at the difference. Thanks so much for your advice
Its usually the quickest way to fix the problem, on both VDSL and ADSL, provided there is no noise on the line. Disconnecting the DLS input to the home hub for a short while, is better than restarting the home hub, as its less intrusive.
It could be that there was an interfering signal within one of the upload bandwidth slots, so forcing a re-connection means that a new set of frequencies would be allocated, avoiding the interfering signal.
Well it didn't last. Back to awful again from a wonderful 49 download and 6 upload. I think I need to report this as a fault. Just awful. Kids moaning, streaming impossible. Help please. I disconnected the dal again and immediately I got 44 download and 7 upload but I can't keep on doing this every couple of days surely? This is a new problem and only seems to be happening since the new update - but that could be a total coincidence. @Keith_Beddoe
Can't hear any noise on the line at the moment
If no line noise then you need to report broadband fault to customer services. Hopefully engineer will fix fault and then reset the DLM
Probably a burst of interference causing the line profile to change. It could be the home hub itself, but without an alternative to check it against, you are stuck.
The main upload frequency band is 8.5-12Mhz, as shown below. So it could be a fault within the hub causing the loss of that frequency band, or an issue with the line, as line faults tend to affect higher frequencies first.
Whatever it is, it soon recovers once you interrupt the line, and the upstream noise margin returns to normal.