I need to move my ADSL router to somewhere discreet as the wife doesn't want it in the hallway next to the telephone which is located near the BT master socket and a pair of RJ45 sockets carrying cat5e cable. One option I've considered is to connect the ADSL cable from the microfilter into one of the RJ45 sockets (cat5e cabled) and then at the other end, connect the cable to my ADSL routers WAN socket. I'd need RJ11 to RJ45 convertor cables such as this or one of these (but which one?) at either end of the connection.
That's the theory, but would it work in practice as a way of distributing broadband around the rest of the network? Are there any risks and/or pitfalls with this approach?