The overhead line has been replaced. I didn't think of asking the engineer if he could perform a line reset as interleaving had kicked in.
How long do I need to wait for the line to reset its self?
Thought id just add, the engineer was very friendly and did a tidy job. I was very thankful of his work.
Plusnet support pages might be able to help you :>>
........but some people think that they are Untrustworthy ?
5. Dynamic Line Management (DLM)
DLM is an automated system that manages the performance of your broadband service.
For 10 days after broadband activation, DLM will test your line to find the best balance between speed and reliability. Speed during this time can vary and your broadband may drop out occasionally (it should return immediately).
After 10 days, small changes in speed can occur (as DLM reacts to changing conditions) but your line speed should remain relatively stable.
In the event of problems (e.g. line errors or frequent disconnections), DLM will reduce your sync to a level that allows for a stable connection. This allows you to continue using your broadband during problems, albeit at a lower connection speed.
Once the problem is fixed, your sync speed should return to normal quickly. When your sync speed returns the IP profile you’ll receive depends on the broadband product:
21CN products: the IP Profile is calculated each time your line syncs
20CN products: the IP Profile will be recalculated after your line is deemed stable (up to 3 days without disconnection)
BT send us reports of profile changes several times a day, so speeds should return to normal once we've updated our system with the new profile (usually within 24 hours).
DLM is the main reason that we advise you to leave your router switched on, as turning it off frequently can cause DLM to think there's a problem and reduce your speed.
Remember: DLM reacts to problems on your line rather than fixing them. If your IP profile or sync speed fluctuate regularly, there may be a line fault or something causing interference
See our Broadband speed tips guide for help tracking down the problem.