C 4012 Handset | Standard 2 . 00 |
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Using the C4012 handset
Switching the handset on/off
To switch the handset on, press ofor more than 2 seconds or place the handset in the charger.
To switch the handset off, press ofor more than 2 seconds when the handset is in an idle state.
Locking/unlocking the keypad
To prevent accidental operation, press Pato lock the keypad. The display shows
place the handset in the charger.
When the key lock is active, calls can be answered normally. To use other handset keys during a call, unlock the handset as described above.
Switching speech monitoring on/off
During a conversation, speech monitoring activates the loudspeaker, enabling you to hear the other party without placing the handset to your ear.
To toggle speech monitoring on or off, press M.
Changing the speaker and loudspeaker volume
During a call and in idle state, the speaker and loudspeaker volume can be changed (low/high— effective for speaker and loudspeaker).
To toggle the speaker and loudspeaker volume, press Pn. The last selection is remembered and valid.
Muting the microphone and ringer
To mute the microphone, press C.
To mute the ringer during alerting, press C.
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