Hi Gorilla,
The easiest way would be to fit this next to master socket:
http://cpc.farnell.com/unbranded/77ar/junction-box-77a-6-way-idc/dp/TE05896
You will now need a drum of 3 pair phone cable and 3 of these secondary wall plates:
http://cpc.farnell.com/jsp/search/productdetail.jsp?sku=TE05880
Because idc blocks on the phone plates and junction box will only take 2 cores punch down, the wiring method ideally would be
Master socket --------- Lounge---------- Bedroom1 ------------Bedroom2 (Like spur) This method wouldn't need junction box. I would imagine it would be easier to run 1 cable to lounge, then 1 cable to bedroom1 and from here to Bedroom2, so this is gonna be hard to explain.
Here it goes: In master box punch down blue on pin 2 blue/white on pin 5 and orange/white on pin 3. Now fit junction box next to master socket and punch these three cores down. Now with the lounge cable punch down on top of these three cores with these colours :
Green -- Blue
Green/White -- Blue/White
Orange/White -- Orange
Now at the lounge extension plate punch down cores:
Green -- Blue Pin 2
Green/White -- Blue/White Pin 5
Orange/White -- Orange Pin 3
This will loop signal from junction to lounge socket and back again. Now punch down the spare cores at juction box:
Blue
Blue/White
Orange/White
Now with cable from Bedroom1 punch down matching colours on top of the above colours in junction box. Now punch down the following on Bedroom1 socket:
Blue Pin 2
Blue/White Pin 5
Orange/White Pin 3
Now punch down same colours from bedroom2 cable in bedroom1 socket. Now alls left is to repeat colour code on back of Bedroom2's socket. So schematic is:
Junction------------Bedroom1----------Bedroom2
Master------------ Junction------------Lounge
Hope that makes sense
Mark