I have a Telex ANR headset from 1991. The first one on the market. I can't find a model number. It is p/n70800-003. There is a volume control on one ear cuff. That is the one that has a loud squeal in it when I turn on the noise canceling feature. Can it be repaired and is it worth repairing? Judy

SOURCE: Dynex Earclip Headset with Noise-Canceling Microphone driver

ok umm....it is a noise canceling microphone, the earpiece works but when i talk into the microphone no one on the internet can hear me please help me with my dynex earclip headset