switel DF 911 Mode D'emploi page 153

Preliminary Information
Special key functions
While entering a telephone number: a long press
inserts a dialling pause.
In idle mode: a long press will activate/deactivate
keypad lock.
In editing mode: a long press switches the character
set (Latin/Russian/Greek), tables -> appendix.
During a call: temporary switch to DTMF if pulse is
acivated.
In idle mode: a long press turns on/off the handset
ringer.
In editing mode: a long press toggles between
uppercase and lowercase character input.
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