I have a hum on the phone line. Verizon has been out several times, and
found no problem. The hum is affecting incoming voice quality, and the
answering machine recording is poor. They did AC voltage, stress test, DC
volts and leakage test. All were "clean". I plugged in different phones at
the NID, and hum was still there.(they say they don't here it)
After unplugging different wires and phones, I noticed the same hum was
coming from the computer speakers.
If I unplug the phone wire from the back of the computer, the hum is
gone from the computer speakers, but not from the phone line.
All this tells me that the hum is on the phone line itself and causing
interference.
My question is what is the tel co missing. I have DSL, but the noise was
there before. That hum from the computer speakers was also there for a long
time, but I did not relate it to the phone line. It seems The digital
answering machine is more sensitive to the hum than an answering mach with
tape.
Also, if I do a memo recording on the phone without the phone line
connected, the recording is OK; plug the line back in, and the recording is
poor.

Thanks for any ideas!!