I have six (6) phone lines running from my rooms into the basement. They are not terminated as this is a new build. I need to determine which line corresponds to which room.
Is there a way to do this without purchasing a line tester?
Wiring – How to determine which phone line goes where, without any special tools
phone-wiring
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Best Answer
The simplest route would be to use a circuit tester on the various lines in your basement, and have a friend temporarily short the lines in each of the rooms.
An audible circuit tester makes this very easy. It can be a standalone circuit checker, or as part of a multimeter's functionality. It raises a voltage across a circuit, and if that circuit is complete current flows, sounding a buzzer.
If you have a multimeter, look for a speaker icon to see if yours can do this.
As @lqlarry said, you could do this with a 9V battery but that shouldn't be needed - the voltage drop should be negligible.