Odd thing yesterday - I was making a call to a friend in Wrexham. Called his landline via mobile on EE (voip i.e. wifi calling). He also has a plusnet phone. Now - after exactly 1hr the call cut off. When I say exactly -- I do mean exactly 1hr after the call connected. Is there a hard cut off after an hour? As usual there is no helpful info on EE's website. I've made long calls before - via landline to landline but not via wifi calling to landline. Its not a problem, I'm just curious.