I have been having regular disconnects since I switched to Fibre (from TalkTalk ADSL) just after Christmas. These can range from a couple of times a day to having 2-3 days without issue.
I have been through all the line tests, repeatedly, and had two openreach engineer visits which found nothing of any great interest on the line itself. My master box was replaced during one of these visits.
After the second visit some months ago, with everything bar the modem having been checked and/or replaced I was advised the modem was faulty. Since the original modem was apparently a welcome gift I had to replace it myself and duly did with a TP-Link Archer VR2800.
This has not fixed the problem.
It does however provide more interesting diagnostics. I can see that during a loss of service (I run a constant ping test) the line status remains up with the same up/downstream speeds as is normal. During this time the router is trying to renegotiate PPoE which usually takes exactly 5 minutes despite me dropping the echo request interval down somewhat. When trying to work from home it's faster to forcibly drop the connection and let it login again.
Unfortunately there is no joined-up thinking when calling support. Everytime I phone I'm pasted the same boilerplate about plugging into the master socket etc with no reference to the ongoing history with all of this.
