Are you aware that you can buy 4 core CAT5 cable STP? - that might be much easier to fit into your RJ11 plugs whilst still giving the advantage of being twisted pair compared to the flat telephone cable.
Are you aware that you can buy 4 core CAT5 cable STP? - that might be much easier to fit into your RJ11 plugs whilst still giving the advantage of being twisted pair compared to the flat telephone cable.