switel M300 Bedienungsanleitung Seite 93

Preparing the Telephone
Connecting a headset (not supplied)
The connector must be a 2.5mm 3-pole
jack plug that inserts in the Power/Headset
socket on the left side of the handset.
a
Attention: Only use compatible headsets. Ask your dealer for
this. When connecting a headset, pay special attention to volume
levels to avoid affection to your hearing ability.
If a headset is connected appears in the display.
GB
7