There is a constant low
Hello,
First, take the phone to a neighbors house, observe if there is still going to be a humming sound. This will reveal if the problem is actually from the phone or if its cause by an equipment in your house.
There are a number of things that can cause humming or static in a phone
line including a short in the wires, a defective phone, interference
from power wires or light fixtures, and a signal from another electrical
device. Here how to go about isolating and repairing the problem:
*Check to be sure the hum is coming from inside your home by
opening the telephone interface box, disconnecting the test jack, and
plugging a corded phone into it. If you still hear the hum, then the
problem is with the phone company. If it stops, the problem is inside
your house.
* If it's inside, plug the house jack back into the
interface box and unplug each phone in the house one by one while
listening in on another extension. If the hum disappears, the problem is
with the phone you unplugged.
* If the hum persists, disconnect
each set of wires one by one from the terminals in the interface box,
and listen on an extension until the sound stops.
* Once you've
isolated the problem wires, check the connections at the jack, and try
unplugging any electrical devices nearby that could cause interference.
* If you're still having problems, hook the other two color coded wires in the cable to the jack and interface box.
* As a last resort, permanently unhook the defective wires at the
interface box and run a new line from the interface box to the jack.
If the above doesn't seem to solve the problem, then I think you actually need a new phone.
Good luck.
