For fibre?
It's a vdsl/adsl modem. Fibre is only fibre up to the street cabinet (FTTC) and from there it comes in over the telephone line.
For fibre?
We tried 3 sky routers, BT openreach engineer said everything as fine and we had a better than average line, still drop out without reconnect. But then now it hasn't gone off for almost 50 hours which is the longest it's ever been. Confusing thing that it is!
BT sport played thru your youview box?
I think ot was an issue - but not 100% sure - not seen anyone else with this box post any problems with IPTV - we can see if @BRIGGBOY81 can connect with the current firmware or not.
AFAIK when I tried to connect using the current firmware (and setting it up as BT amongst other ISPs) I was unable to connect to BT Sport and other IPTV channels.
Hard to say without more info, could be lots of things, we'll need to narrow it down a little.
Enter 'http://192.168.0.1/setup.cgi?todo=debug' , with your routers address if not that one in a browser. Then get hold of dslstats from the kitz forum, 5.6.2 is the latest version i think. The instructions for setting that up are also in this thread, so search dslstats in this thread.
Run it and save the telnet data and post that here so we can take a look.