If it is for your router you can just use rj11 cable, or if you're connecting a telephone attach the bt adapters on either end.

High quality 4 wire extension lead 15m 


No drilling or connecting wires


Can be used to extend your broadband or fibre router


Or a telephone extension lead


telephone extension are kit rj11 and 2  BT adaptors 



12 MONTHS WARRANTY WILL NOT WORK with  some Business telephone systems