If he has not fixed a fault and has only reset DLM you will find that your line will start to lower its speed again over time.
Hopefully this will not happen and the engineer did a proper job.
Unfortunately this does appear to have happened, as I am already back down to the same speed I was experiencing before. So another frustrating call to BT only to be told that all is well as no faults reported despite speeds being much lower than guaranteed minimum, so I have to have yet another engineer visit.
As mine was a new line in a new house from a new cabinet, is it possible that I was put into a DLM band on install instead of being in an open profile?
You line initially should start with no restrictions and fast latency. If connection problems or lot of errors or line noise then your speed will reduce as DLM sees it as a problem. Need to hope next broadband engineer finds the problem, fixes it. And then resets DLM
So when I 1st moved in the installation engineer informed me I was getting 40Mbps but when I set everything up I was only getting 8Mbps, BT told me that there was a fault on the line that would be fixed within 4 days. After that point it went up to around 24-27Mbps, so still below the guaranteed minimum. Only after the engineer visit yesterday did it actually exceed 35Mbps and was running at around 38Mbps. Now I am back down to the 20's again.
I can just see a never ending circle of engineer visit, brief improvement, then back to where I am again. And every time I need to work from home but struggle to do that with my broadband going up and down whilst the engineer is doing his thing. Call to India are really not helping, especially when they tell me my speed is good and there are no issues....getting 10Mbps below minimum guaranteed is not good from where I am sitting!
Post your current router stats please
Yes I will post them as soon as I find where my 3 year old put plastic tab with the admin password on it!