What exactly is meant by "Mater Socket"

Question

I don't have Infinity yet though I've had BT Broadband almost since day 1. The main reason I have been putting off getting Infinity is due to the information saying that the Infinity modem can "only be connected to the master phone socket". I have always assumed the "master socket" is the main (first) phone socket that comes into the house? In my case this is just inside the front door. In fact, it is in such a bad position that it has never been used in the 25 years we've lived here. Also, there is no electric socket in the doorway and nowhere to stand modems etc. So, (I thought) no chance we can ever have Infinity.
We have several telephone extensions around the house; in living room, kitchen and bedrooms - these were properly fitted by BT 25 years ago and all fully working (with filters). One of these has been used as our "Internet" socket since dial-up days and with ADSL for over 10 years. It's in a spare bedroom right beside my PC desk.
On this forum I'm seeing messages stating that the Infinity engineer can make any chosen socket the "master". Is this true? Is it simply a case of me telling him to fit it beside my desk in the spare bedroom and that's that?
A second question; I realise Infinity uses two modems. I assume one is needed for the new type of DSL connection and this connects to a "normal" modem/router. Will I be able to use my existing Netgear wifi/Ethernet router rather than being forced to use something that BT provides? I really Really REALLY do not want a BT HUB of any kind! Been there - done that - hated every second of it - several times!
Peter Thirl

Answer 1

'What exactly is meant by "Mater Socket"
Well, you've already answered your own question in your post;
I have always assumed the "master socket" is the main (first) phone socket that comes into the house? In my case this is just inside the front door.
Ref to this;
'On this forum I'm seeing messages stating that the Infinity engineer can make any chosen socket the "master".'
I doubt he will convert the socket where the router is into the master because of what you said here;
'We have several telephone extensions around the house; in living room, kitchen and bedrooms'
If the engineer were to convert the extension in the bedroom to the master socket then he would be at your house all day running new cabling from the new master in your bedroom to all the other extension sockets, unless you agree to him not connecting them.
Easiest thing to do would be to leave the master where it is and just run a data extension cable either internally or externally, whichever is best from the master to the spare bedroom. Providing its within 30 metres, cable length that is.
A second question; I realise Infinity uses two modems. I assume one is needed for the new type of DSL connection and this connects to a "normal" modem/router. Will I be able to use my existing Netgear wifi/Ethernet router rather than being forced to use something that BT provides? I really Really REALLY do not want a BT HUB of any kind! Been there - done that - hated every second of it - several times!
You can put whatever router you want on there but don't expect the engineer to fit it for you. They are only contracted to connect up the Home Hub 3 and prove the internet is working on there. Once he leaves you can take it off and plug your own one in, if for whatever reason it doesn't work its not the engineers problem as he only has to prove the service works on the Hub 3.