using a phone sim to connect to 4G internet

[rockandice]

I'll be using an EE sim in a pole mounted 4G parabolic antenna with a built in modem and router to get internet in a very remote location with almost no mobile signal and no phone lines. Testing it with a PAYG phone sim I can get 22Mb/s download, so the cheaper unlimited phone sim (as opposed to the dearer data sim) will do, even though its limited to 60 Mb/s.

If I connect a voip phone to my internet connection will I be able to use the phone number of the mobile sim to make and receive calls?

[rockandice]

Yes I realise I'll need another VOIP number but I didn't want to set up a new contract for one until I was sure it would work with EE. There seems to be issues with EE using IPv6 and not falling back to IPv4 properly so VOIP providers that use IPv4 were having trouble.

Also mentioned was "if it’s not IPv4/6 thing then it could be CGNAT (means you share IP addresses with other users) which EE deploy and the other three networks don’t."

But if things are better now I'll just have to make it a condition of my VOIP contract that it works with IPv6 so I can get out of it if it doesn't work.

[XRaySpeX]

Most, if not all, UK mobile networks employ CGNAT.