Sorry for the absence…been busy myself.
As I said, I’m bit confused at how you are set up. What you have described suggests you are on Fibre 1 or Fibre 2, (that is FTTC). If that is the case, the diagram provided by Keith is the set up you should have but with the addition of the phone plugged into the second socket on the 5c. (You mentioned you had a 5c master socket. This is the socket shown on the far left of Keith’s diagram). This is assuming you are still on old PSTN phone system. As I also said, if you are on Digital Voice, the phone plugs into the green socket on the back of the hub.
It is possible to plug an ethernet cable into the socket on the 5c as it is a dual-purpose socket and can take an ethernet RJ45 or an RJ11 plug. The router, however, can only take an RJ11 in the DSL port. It is the DSL port you require for FTTC. If, (as I suspect), you are trying to connect the socket on the 5c to the WAN port on the hub with an ethernet cable it will not work.
