Finally heard back from 2Talk. They say there is indeed a fault with auto provisioning of the SPA112/122, and manually configuring is the only option!! I wonder if it ever worked since 2014. Would have been great to know this in advance, e.g on their website. Spent more hours manually configuring my SPA112 and finally up and running. Fantastic.
For test purposes, I've taken the free 028 number until I'm confident this is going to work well, then I'll get our home line ported.
I have one problem. I can call mobiles no problem, e.g. 021-xxxxxx but the only way I can dial local NZ numbers is to dial the full international access version, e.g. 00 64 9 xxx xxxx. Anything else, for example 09 xxx xxxx gives me a number unobtainable. Is this normal? Will I have to still do this when I get my local 09 xxx xxxx number ported across, or will I be able to dial the local area code only? Is this any easier with WXC?
Oh, and one last question. Caller ID works great with my Panasonic cordless DECT but not at all with my Uniden R055 xDect. Is there any way of fixing this?