This is my 60 second guide to wiring a BT (UK) phone line into a home network using Cat5e cabling, based on my own recent experience. This should allow you to plug your phone into any available RJ45 socket, then at your patch panel connect it into your phone line directly from the corresponding port.
1. BT Cable to Master Socket
The BT cable comes into the house from somewhere outside and is terminated on a 'master' socket. The cable contains 4 - 6 wires, but usually just 4. Only 3 off these are officially used, and only 2 are actually required. The 3rd (Orange/White?) wire is the bell wire, only used to make older phones ring, but not required by modern phones and can cause interference to ADSL if connected. I think you are still supposed to connect the bell wire from the BT cable to the master socket, but then you don't have to extend it to any extensions (I just left it out completely).
The two remaining wires are the 'A' (White, 0V, Pin 2) wire and the 'B' (Orange, -50V to Earth, Pin 5) wire. Terminate these on the master socket on the corresponding contacts.
2. Extension Socket
I used a length of Cat5e cable (better for carrying ADSL as less interference due to twisted pairs) to run a single slave extension from the master socket to a box near my patch panel. NB. There are only two wires required to carry the phone signal, extending the two wires from the BT master socket.
At the master socket end, I terminated the cable onto the back of the removable faceplate.
Blue -> Pin 2
Blue with White Stripes -> Pin 5
At the patch panel end, I terminated the cable onto an ADSL face plate - this basically has an ADSL filter built in, removing the need for untidy dongles hanging off the socket front. The face plate provides two sockets - a BT plug socket (filtered) and an RJ11 (unfiltered) socket for ADSL to connect to the router.
As previously, terminate the wires as follows:
Blue -> Pin 2
Blue with White Stripes -> Pin 5
Test this works for ADSL and your phone line before proceeding any further!
3. Make your patch cables!
BT -> RJ45: To connect your extension socket to a port in your patch panel. I don't have the expensive crimping tool for BT plugs, so I simply used an old BT cable, snipped off one end and attatched an RJ45 plug instead. Quality of cable not really an issue as only analog voice signal is being carried on this cable - ADSL has already been separated out.
A BT plug has 4 pins - only the outer two pins (1 and 4) are required. The color of the wires inside the cable may vary, but I used the red and white wires. The important thing is that Pins 1 and 4 on the BT plug are connected to Pins 3 and 6 on the RJ45 plug (if in doubt use a multimeter with continuity testing to test and confirm after you've made the cable).
BT Plug end:
White -> Pin 1
Red -> Pin 4
RJ45 end:
Red -> Pin 3 (to line up with a narrower RJ11 plug's pins 1 or 2)
White -> Pin 6 (to line up with a narrower RJ11 plug's pins 4 or 5)
RJ45 - RJ11: To connect your telephone to an RJ45 wall socket. NB. You can actually put an RJ11 plug into an RJ45 socket (they are the same height and depth just different widths), so you could also get away with an RJ11 -> RJ11 cable. I used a length of Cat5e for the actual cable to minimise any impact on the ADSL signal.
RJ11 end: Assuming a '4 pin' RJ11 plug (they can have up to six):
Blue -> Pin 1 (Pin 2 on a 6 pin RJ11 plug)
Blue with White Stripes -> Pin 4 (Pin 5 on a 6 pin RJ11 plug)
RJ45 end:
Blue -> Pin 3 (to line up with a narrower RJ11 plug's pins 1 or 2)
Blue with White Stripes -> Pin 6 (to line up with a narrower RJ11 plug's pins 4 or 5)
RJ11 - RJ11: To connect the ADSL socket of the extension face plate to the ADSL router. I used a length of Cat5e for the actual cable to minimise any impact on the ADSL signal.
Assuming a '4 pin' RJ11 plug, for both plugs:
Blue -> Pin 1
Blue with White Stripes -> Pin 4
NB. If using an existing RJ11 to RJ11 cable, make sure it is 'straight through', i.e. that each pin on each plug is connected to the same pin on the plug at the opposite end. At a minimum, pins 1 and 4 should be connected this way.
Good luck!
