So your saying everyone on SKY broadband with a Sagemcom F@ST 2504N need to install custom firmware and break Sky terms and conditions ? wow that's a hell of a lot of people. Not sure many of them would even know how to start installing custom firmware.
Who they gonna call when they get a problem, SKY will turn round and say you've installed non approved firmware, so it's not our problem.
pH-Mb is not affiliated with BSkyB it is custom firmware, not SKY issued. & not SKY supported.
AVAST2015 Home Network Security introduced Nov 2014 causes the problem.
I have turned it off and had zero disconnections in 39 hours.
I was hoping for some help here but you seem intent on blaming SKY
I would have tried any suggestions to try to eliminate the problem so we could have narrowed down as where the problem is happening but alas you do not want to help, just blame.
For those on SKY with a F@ST2504n SKY issued and maintained router ( ADSL and FIBRE), following this thread,
Going to AVAST Settings / Tools and selecting Home Network Security to OFF (and a reboot for it to take effect)
Cures the 2/3 times a day disconnection problem.
What a shame "a support forum" that doesn't.