First, here's a picture of a panel that's on the inside west wall of my garage. It's not a great quality picture, but it's one I had access to from here at work and it should be good enough to ask my questions (click image for full sized version):

(1) is a standard white square telecomms access point with a single BT socket, and a printed label saying ADSL - and I know that the previous occupants had ADSL broadband.
(2) is an array of twelve RJ45 sockets that I assume are connected to sockets in the house - many rooms have plates on the wall that contain one BT and one RJ45 socket.
The ETP is on the outside east wall of the garage, so it's not just behind this panel - it's the width of a double garage away. I mention this to say that if any additional wiring between the ETP and the panel was required it wouldn't be a simple job (or at least would result in exposed wires being stapled to my inside garage walls).
And my current modem/router is a standard issue Spark "business gateway", i.e. the Huawei HG659.
So what should happen when the VDSL install is done? In my head, the process goes something like this:
- a master splitter is installed in the ETP,
- the split off line to be used for VDSL connects to access point (1),
- the socket in access point (1) should be upgraded from BT to RJxx (11, 45, ??),
- a short patch cable is plugged into access point (1) and connected to the RJ45 socket in array (2) that connects to the socket in the house where I want the modem/router to sit.
- the modem gets plugged into the patched socket.
Also, is it possible that access point (1) indicates there might already be a master splitter in the ETP, even though the previous occupants had ADSL? If they were sharing a line for their phone and modem (presumably with in-line filters) then what would that ADSL access point be for?
And my final question is: If I upgrade the modem/router in the future, could I locate a modem in the panel, connect it to the world via access point (1), then connect via array (2) to two or three routers or access points in different parts of the house so I get better wireless coverage?