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Using the MM 100
Transferring an active call from the headset to the mobile phone*
̈ Press and hold either the Next button » or the Prev. button · for 2 seconds.
A low confirmation beep is heard in the headset. The call audio is transferred to the mobile phone.
*This function must be supported by the mobile phone.
Muting/unmuting the headset’s microphone
To mute the headset’s microphone during a call:
̈ Press and hold the Play/Pause button º for 2 seconds.
Two low mute indication beeps are heard in the headset every 4 seconds while the microphone is muted.
To unmute the headset’s microphone:
̈ Press and hold the Play/Pause button º for 2 seconds.
A sequence of low confirmation beeps is heard in the headset. The microphone works as usual.
Changing the volume
The headset manages 3 different volume settings independently of each other:
1. The audio volume can be changed as long as the headset plays audio.
2. The volume of the other party can be changed as long as a telephone call lasts.
3. The volume of the headset ring tone can be changed:
– when the mobile phone rings
– or when audio playback is paused.
After you have changed the headset ring tone volume, the ring tone is played once in the set volume.
The volumes can be adjusted in 12 steps. When the minimum or maximum volume is reached, a sequence of high
beeps is heard in the headset.
̈ To increase the volume step-by-step, press the Volume up button µ.
̈ To reduce the volume step-by-step, press the Volume down button ¾.
̈ To change the volume continuously, press and hold the respective volume button.
If you are out of the transmission range
Calling and audio streaming is only possible in the Bluetooth transmission range of the mobile phone or Blue-
tooth device, respectively. The transmission range largely depends on environmental conditions such as wall
thickness, wall composition etc. With a free line of sight, the transmission range of most mobile phones or Blue-
tooth devices is up to 10 metres.
If the headset leaves the transmission range of the mobile phone or Bluetooth device:
• The sound quality deteriorates before the connection finally breaks down.
• Your mobile phone or Bluetooth device displays the loss of connection.
• Please refer to your mobile phone or Bluetooth device manual for information on whether the call is automat-
ically transferred to the mobile phone or Bluetooth device or requires an acknowledgement to do so.
When there is a loss of connection, a descending sequence of beeps is heard in the headset.
Depending on the connection maintained, the headset will then go into idle mode (no connection maintained)
or standby mode (HFP/HSP connection maintained) or streaming mode (A2DP connection maintained).
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2 s
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2 s
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µ
¾