I had to perform some work on my home phone line including running new cable to a newly installed patch panel. I was suprised to notice that the existing cable had simply been twisted onto the incoming cable pair so this was quickly remedied.
Anyway, the incoming cable contained a single pair comprising of yellow and black wires. There had been several fingers in the pie and the cabling through the house was quite a mess, and figuring out the colour codes took a little bit of work, Here’s a guide for those living in an older NZ home who need to perform work on the phone line:
| Cable Type | Tip | Ring |
| Incoming line | Black | Yellow |
| Existing house wiring | Red | White |
| Cat5 cable | White(w/blue) | Blue |
| Flexible phone leads | Green | Red |
If you are still unsure, grab an LED and 10k resistor and connect the across the line. If it glows, the cathode is connected to tip and the anode to ring.
| Connector Type | Tip | Ring |
| BS6312 (BT style) | 5 | 2 |
| RJ11 (6P6C) | 4 | 3 |
| RJ45 (8P8C) | 5 | 4 |
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Hiya. I ran a ‘phone extension from the POST outlet to plug my PC into. It works in that I can dial out and pick up calls using Bitware but when I try to send a fax from the PC it gets intercepted by the fax/phone attached to the POST outlet. Is this avoidable or inevitable?
Ps. Are you the NZLamb from Blenheim?
I appreciate, lead to I found exactly what I was looking for.
You have ended my 4 day long hunt! God Bless you man. Have a nice day.
Bye
If the LED glows, why the cathode connected to the tip but not ring since the ring side is negative?
Thanks! I have black, yellow, white and brown 4 colours from ground, and my house have black, white, green, blue, red and orange 6 colours. Connect ground incoming black, yellow, white and brown to house red, white, blue and green? Really confused!
I connected black to black, white to white, brown to orange and yellow to red. Have broadband but the phone is not working. Why is that?