A puzzle.
Yesterday evening I lost VOIP service (Genuis black).
Some NZ sites were unreachable for a short time  - Geekzone and WoBH, they came back, but no phone service.
Looked harder today, after factory reset and reboot, Genius box reports ADSL OK, (tad slower, stats indicated 12dB  downstream attn, not usual 10dB).
Very different assigned WAN IP, not usual 121.98.nnn.nnn or 121.99.nnn.nnn, and WAN login genius@orcon.net.nz, not [username]
Called it in, (~1PM) after some faffing about and a reboot while CSR was on the mobile, no change. There's a ticket, but he wouldn't tell me the number.
ADSL service works, but no SIP authentication no matter what I try here.
Checked DNS that router had auto-configged - via whois, it's a Spark DNS, so was my WAN IP.
Rebooted router (again) with Orcon DNS 121.98.nnn.nnn set manually, web access fine, still no SIP/VOIP.
UBA connection to cabinet, have Chorus been in it and assigned me a Spark port? A whois just now reports I have A Spark WAN IP 122.61.164.nnn
Thoughts?