I'm helping out my wife with her new office and their VDSL connection.
My old Technicolor VDSL modem would constantly drop the connection so we've asked Callplus, and they sent a preconfigured Netcomm Gigabit NF4V modem/router.
It connected fine but now we can't dial into their remote office via VPN, we've tried on two laptops using the LAN cable.
I've called Callplus but twice but they couldn't suggest anything.
I've tried myself disabling the firewall, IPV6, basically playing with the PPP settings, nothing changed.
I've reverted for now to old Technicolor modem although with the same reliability problems as before.
Has anybody got any suggestion on where to look?