Phone wall jack problem?

Question

One of the phone wall jack can't receive calls. The rest of 4 jacks can. The problem one has red-green and yellow-black wires connected as others. What are the steps to troubleshoot this problem?

Answer 1

well, you need to put more information pertaining to how the internal wiring is setup/cabled, and if this issue is in a home or a business? Do all 4 jacks use the same phone line/number?



If this in your home some possible problems are:



-the phone wire or pair you are using may be broken

-the wire pairs are not punched down into the RJ11 jack

-that particular jack's wiring isn't terminated or connected to your main phone line connection/wire

Answer 2

USA small phone connector (RJ type) are wired differently to the UK ones. You may have the wrong type for the wrong telephone. Try a different phone / cable.



Your phone may not work because there is not enough power in the line to run more than 3 phones, which is the normal suggest limit in the UK, and maybe in other countries.



One of the lines might have cracked in the extension cable in the wall. Some unused wires in the cable could be used alternatively. Rewire to different colours at both sides of the connection.

Answer 3

do this:

1] lay a spare cable from the point-of-origin, crimp in a new jack, check if its working

2] if its working - replace the old set of cable & jack with the new one!