(DISCONTINUED) I do not hear a dial tone. • Check that all the cords and plugs are connected correctly. • Check that the power adapter is plugged in and has power. • Check that the on-line indicator is lit. If it is not, place the headset in the base unit and take it out again. • Check that the battery is charged. If the battery is fully charged, the battery charging indicator on the base unit will light when the headset is placed correctly in the base unit. The person I am talking to has difficulties hearing me. • Check that the mute function is off. • Check the position of the boom arm and make sure that the microphone is placed as close as possible to your mouth. • Readjust the microphone volume. • You may be out of range of the headset’s base unit. Move closer to the base unit. My battery charging light keeps flashing and will not go solid. Check the battery is correctly fitted inside the headset, and/or the headset is placed correctly in the base I have set up my GN9120 correctly…