How to Install Telephone with extension

Hi, Can anyone please tell me how u install a telephone with extension please as i have lost the instructions. We want the main phone in the living room, and the extension in the bedroom.Thanks in advance.

Connect from the master ( from the removable lower section ) 2 and 5 plus 3 to extension 2,5 and 3 most modern phones not require 3

What about just buying a pair of cordless phones

Also if you have broadband then definitely try without wire 3 first as it can lower your broadband speed by acting as an antenna for RF interference.

Connect from the master ( from the removable lower section ) 2 and 5 plus 3 to extension 2,5 and 3 most modern phones not require 3

no need for 3 as filter has inbuilt ringer presuming they are using one for adsl/fttc through phoneline.