cable for connection with the router from wall (ok to use RJ11 6P4C?)

[mapreader]

I am using the vodafone router HUB, with a cable connecting to the wall phone socket. I am looking to buy another longer cable for a better fitting location of the router.

I understand the cable is an RJ11-RJ11 6P2C (only using the centre 2 pins). When I look on internet I can see most are selling RJ11-RJ11 6P4C cables. Hope to confirm if those can be used for the connection to the router.

Many thanks.

[Ripshod]

If your connection is FTTC (VDSL2) then yes, the 6P4C RJ 11 would be fine. 

[Jayach]

The cable to buy should be identified as a DSL cable, it will then be the correct twisted pair cable.

[Ripshod]

RJ-11 is a standard. Anything outside this standard is not RJ-11. CAT5E cable can be crimped to RJ11 connectors and still comply with the standard - albeit with a spare pair.