Jelly crimps and correct tool

I've always just used a pair of grips, like these, never had a problem, (with the lifetime total of less than Qty 25)

I think they're designed for use in parallel smooth jaw pliers, e.g.

But it's not worth buying any specially, just be gentle with some other pliers ...

IME they will work fine on both. They are IDC terminals and those are commonly used in crimp on plugs like RJ45 or the BT style phone plug.

The proper tool is a small pair of smooth jaw pliers with a gap machined in the end so that you can crimp too far. However normal pliers used in non gorilla mode will be fine (or for that matter even strong thumb pressure works as well I find)

Ok, thanks. I'll experiment.

Up to you, but if it were me I'd put a proper RJ11 (or RJ45) socket on the wall and then an off the shelf cable to the router. That way you aren't dependent on any bodge wiring and use proper punchdown terminations.

Bit surprised by lack of ringing as I don't see how it would work but not ring. Maybe it needs the bell wire connecting not just the voice pair? Or a ring capacitor to regenerate the bell wire from the pair. The router will have that, but if it only has 2 wires connected that might cause ring failure.

Theo

That is exactly how I had originally done it !. I had a *data* extension from the NTE5 master socket, through a microfilter crimped to the brown pair of CAT5E which fed the centre 2 pins of a CAT5E socket with the modem cable (uses only the 2 centre pins). Immediately next to this CAT5E outlet I had fitted a blank 25mm back box for the phone extension that you refer to.

OR Droid just removed my NTE5E master, crimped the incoming A+B (orange and white) to the blue/white pair of said CAT5E and put a new NTE5C outlet into the empty back box which I has intended for a phone extension. Then he made up his flylead terminating in another CAT5E pair behind the new NTE5C faceplate and hacked about with my original extension wiring next to the original BT master socket.

None of this was necessary. He could have just used the existing CAT5E outlet as I had installed it and simply jelly crimped the original A+B wires directly onto my brown/white 'data' extension. This would have taken him less than 15 minutes. He actually spent best part of