Just to add, unfortunately my experience with sipgate wasn't great.
I setup a basic account and put a £10 credit on as I'm looking to ditch the landline as it doesn't get used often and I have an FTTP connection so why do I want to pay line rental.
Everyone in the house does have a mobile but the signal quality isn't great and we're all on PAYG because of low use so no wi-fi calling.
I selected an MK number since that's where I am am, set up the FritzBox to act as a DECT base and began testing.
When I rang my mobile the number appeared correctly, however, if I rang the landline it came up as International and then the number.
I raised this with sipgate support who said they'd seen it on some occasions because the call was going via a BT partner network and as a German company they couldn't do anything so refeered me to BT to get it fixed (landline is on WLR)
This is important is if I have to ring somewhere I really don't want them thinking the CLI looks iffy.
From what I can see all the traffic goes out to Germany so I'm guessing it gets delivered to BT on one of their IP links?
Frankly their complete unwillingness to try to help has dissuaded me from using them, requested a refund which I have received promptly
Next I tried Andrews and Arnold who were a world of difference, no problem with the CLI as all of their network is in the UK of course and dealing with them is comparable to dealing with Zen, really helpful so will probably go with them when I do something definite in the new year.
Virgin (ADSL) => Namesco => Newnet => O2 => Plusnet => Zen => Newnet => Zen => Freeola => Vivaciti (using O2 Wholesale DSL) => Xilo (C&W Wholesale) => Xilo (O2 Wholesale) => Xilo (TT Wholesale due to O2 Wholesale closure) => Zen LLU =>> ZeN FTTP (76 Mbps down, 18 Mbps up)
Router: Fritzbox 7530
Note: I don't lay turf for anyone. astro or otherwise, all views and opinions expressed are my own based on experience.
Edited by techguy (Sun 30-Aug-20 18:18:36)