My girlfriends father is keen to give VoIP a go after seeing how well our setup works.
I'm going to recomment that he goes with VFX and gets a Cisco SPA112 ATA as sbiddle has confirmed this is a supported device on Xnet.
Can anyone tell me where the best place to source on is, or if Xnet can provide? Ideally, one that is pre configured with the VFX provisioning URL is ideal, as it would mean a nice easy set up for him.