You will see we have 3 main BT to RJ45 patch kit category types :-
(1) Standard
http://www.bttorj45.com/shop/1/bt_to_rj45_patch_kits/(2) Broad Band
http://www.bttorj45.com/shop/38/bt_to_rj45_adsl_kits/(3) Privacy
http://www.bttorj45.com/shop/39/rj45_to_bt_patch_kits_privacy/The standard kits patch one telephone line to up to 4 seperate locations on your network cabling. Each kit comes with all leads & converters required to do this. Each telephone connected can listen in to the conversation or make it's own call with the others being able to listen ...