DASAN ELECTRON DH-027TFN, Руководство пользователя

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Adjusting your headset
Adjusting the Microphone Boom
To avoid low or distorted sound, and provide clear and crisp telephone
calls the microphone should be positioned within 2cm your mouth.
The microphone boom arm will move in a variety of directions to
ensure the best fit.
Safety Warning
Headset receivers may pick-up sharp objects.
This product should only be used with other ACA approved
equipment when connecting to the network.
Caring for your Headset
To gain optimal performance, hygiene and lifespan from your
headset, replace all consumable items (ear foam, microphone
foam, rubber microphone filter) every six months.