switel DE18 Série Mode D'emploi page 139

Key lock 63
The key lock prevents functions assigned to handset buttons being activated inadver-
tently.
3 sec #
Incoming calls can still be taken in the normal way even when the key lock
function is activated.
3 sec #
Handset ringing melody
The ringing melody on the handset can be deactivated.
3 sec *
3 sec *
Activate the key lock function
Deactivate the key lock function
64
Deactivate the ringing melody
Activate the ringing melody
Telephoning
139