telephone wiring help

[JaG5553]

I have a joined extention cable running around the house for Sky. The connection has come apart. Can anyone tell me which wires to join to which please.

4 wire cable from main box
Red
Yellow
Green
Black

2 wire going to Sky Box
Yellow(ish)
Blue

Any help would be appreciated as I have tried several combinations without success.
Thank You
Graham

 

[telectrix]

go to the telephone point. see what colours are on terminals 2 and 5. then connect your sky pair to them. a pic. would be helpful.

 

[adstewart]

doesn't matter, only two cables are used in phone lines so as long as the cables correspond at both ends in 2 and 5 it should work, usually blue in 2, yellow and white in 5. hope this helps.

 

[JaG5553]

Sorted. Found the two colours going to A & B from the plug on the extension. Then joined those colours to the two on the second extension. Bingo. It works.
Thanks for your help.
Graham