5Note: If more than 15 seconds elapses without pressing the volume + or volume – buttons, the lastselected interface will be activated.4. Audio and visual indicatorsThe GN9120/GN9125’s headset and base have audio and visual indicators, which represent variousactions and aspects associated with setting up and operating the product. The headset gives audio andvisual indications. The base gives various visual indications via its online, link and general indicators.Familiarize yourself with these indicators to fully benefit from your GN9120/GN9125.The headset’s audio indicators:Headset action Audio indicationOut of range Beep every 10 sec.Mute ON Beep every 15 sec.Low Battery Charge Beep every 20 sec.Adjusting Volume Low single tone per pressMaximum Volume reached Short beepMinimum Volume reached Short beepTone control adjustment Beep (indicating 6 sec. has passed)Adding a headset at conference call Beep in master headsetIncoming call Ringtone (only when using the GN1000, or in the inter-face modes DHSG and MSH, if they are supported by thetelephone equipment)The headset’s visual indicators:Headset mode Headset indicatorLow Power mode Flashes rapidly when switchingbetween modesTransmit volume adjustment Flashes rapidly when switchingbetween modesThe base’s visual indicators:Base’s on-line indicator On-line indicatorCharging in Process Battery charging indicator flashesCharging completed Battery charging indicator ONMute Mute indicator ONLow Power Mode Link-up indicator flashes every 10 sec.Adding a headset to conference call All lights are flashing, followed by battery indicator ONLink between headset and base Link-up indicator ONEHS (Electronic Hook Switch) setting Please refer to separate sectionPairing of Headset and Base All lights are flashing for approx.4 sec., followed by battery indicatorONOn a call On-line indictor flashes