The one you need for DV.
I'm just about to get mine and was extremely miffed. I'd delayed the date to May 22nd , and you can guess....BT completely cocked it up and turned my phone off beginning of April. After waiting an eternity I managed to get hold of somebody and will be getting the hub in a couple of days. Now, I won't be using their **bleep** router but my Asus which has a guest setting for our b&b. Currently I'm using a Draytek as the passthrough modem to the Asus. My question is can I just put the BT SH2 into passthrough mode, connect my phone to it and let the Asus handle the broadband? There was talk about keeping wifi on the BT hub until the phone is 'registered' then I can turn off?
I've seen complicated and confusing wan/lan settings but can I just simply pop it in passthrough?
No, but you can turn off the Wifi and DHCP and connect your router's WAN port to one of the SH2's LAN ports so your router provides the WiFi and DHCP. There are many tutorials on the web to explain how to connect 2 routers together.
Digital Voice doesn't use Wifi, the Hub is a DECT base station.