Phone Socket Replacement - A & B

[Leu007]

I'm looking to replace my old BT phone socket (used for SKY Broadband). The phone socket has two wires, one going to A the other to B. My new socket arriving has numbers. Can someone please tell me which numbers my wires go into.

Any help will be greatly appreciated.

Btw, I have checked on the BT forum, while similar questions have been asked this one (referring to the type of socket I have) has not. I have tried joining a discussion on their forum but for some reason it won't allow me to.

Thanks again.

[Mini+Mo]

Master Socket

B - 2

A -5

https://telephonesuk.org.uk/wiring-info/

[Leu007]

@Mini+Mo 

Thanks so much for your quick reply, your help is very much appreciated.