ASCOM d81 Messenger Quick Reference Manual page 6

Turn Loudspeaking Function on/off
During a call, press the soft key to turn the loudspeaking
function on, or press the soft key to turn it off.
Turn Audio Signals on/off
In idle mode, a long press on or changes between
audio signals on/off. The icon indicates a silenced telephone.
A short press on or before answering a call, silences the
ring signal.
Turn the Microphone on/off during a Call
Press "More", select "Microphone on/off", press "Select". It is
also possible to turn the microphone on/off by a long press on
or .
Lock/Unlock the Keypad Manually
Press to lock/unlock and then soft key "Lock" or
Yes". The "Locked keypad" icon indicates a locked keypad.
Change the Volume during a Call
Press to increase the volume, and to decrease the
volume. Or, use and on the Navigation key to adjust the
volume.
Charge the Battery
Charging is done in a desktop charger or in a charging rack.
Charging is indicated by orange LED. When the battery is fully
charged the LED is green and a fully charged icon is
displayed.
While in a desktop charger, the handset is fully operational. The
handset does not vibrate in charger.
The battery can also be charged in a separate battery pack
charger.
Note: Charging below 5°C will harm the battery and shorten the
lifetime. It is NOT permitted to charge any battery in hazardous
areas. It is NOT permitted to charge the EX battery pack alone.
Remove the Battery
It is recommended to switch off the telephone before removing
the battery.
Note: It is NOT permitted to remove any battery pack in
hazardous areas.
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