@RossT off the top of my head you'll essentially set up a PPPoE connection on the Edgerouter without VLAN tagging.
@andrewpaul You'll be doing a double-nat (which is something you don't want to do). For Vodafone TV somebody else has already posted a quick how-to Here to get it working on the Edgerouter. As for the landline you may be able to connect the HG659 via the WAN port to your network switch and configure internet access on it (bare in mind also - you don't want to connect anything after the HG659 since you'll double-nat yourself again). Vodafone is a tricky one since you're forced to use their router if you want a landline, if you ditch the landline it makes things a truckload easier.