To be able to close down the topic,
I ran the line test and all ok (low hum)
I took out and re-inserted all of the different cables (power and data)
No instances of rebooting so far this week so either something was done at a network level or a loose cable being the root cause.
Thanks for the assistance in pointing me to try the things needed
Sorry. Wish I could be helpful but I too am having the same continuing issue as I had before. There was an improvement but its returned to (admittedly less) irregular resets.
I really believe it to be the network as I see a number of private wifi signals being lost and then returning at the same time. I blame the heat/lightening/thunder/atmosphere for it as it calms under less extreme weather.
And yes, completely sympathise with work. I've dropped out of many a call when I could have done without it happening.
One of the support guys will likely be along to offer advise soon, I'll look out for responses to see if I can benefit too.
Thanks for the update. Hopefully someone can find a solution to this issue.