Frequent Loss of synchronization

[#1]

Hi,
For the past few weeks I have been getting lots of internet disconnections.  My router reports frequent Loss of synchronization which occur throughout the day and night (even when not used for several hours overnight). I have frequently checked my router stats and noise margin (varying 7-12b), attenuation (stable at 39db), and connection speeds and they appear to be OK. The down times are ad hoc and no time pattern is apparent..
I am thinking of raising a ticket with Plusnet as it has now become rather annoying and thought I may get some suggestions before I do so. I have attached a copy of one typical report sent from the router.
Any comments would be appreciated.
Many thanks

[#2]

Hi there,
I've run a full set of diagnostics but don't see any obvious causes for the issue.
I can see the connection is dropping frequently though so you've done the right thing by reporting a fault.

[#3]

Thank you Adam,
Apart from a couple of losses overnight, it appears matters have settled down today for the first time in a while, so normal service has been resumed.
It would be interesting to know what were the possible causes of this behaviour!
Anyway....PlusNet came to the rescue..
Appreciated.
Regards,
N