switel DCT 577 Série Mode D'emploi page 138

Preliminary Information
The functions assigned to the two softkeys are shown in the lowest line of
the display. The key function changes automatically according to the operat-
ing status of the handset.
10
On: The alarm function is activated.
Flashing: The alarm is ringing.
The key lock is activated
On: Answering machine is on.
Flashing: New messages on the answering machine.
You received a message in your answering machine
provided by the telephone network (depending on
telephone network/provider).
On: You can conduct an internal call (only with
several handsets registrated on the base station).
Flashing: Incoming internal call.
While browsing call list: New call.
While playback from the answering machine: new
message.
Character overflow left/right. Use the up-/down key
to scroll.
Accessing the menu.
Confirmation.
Making an internal call (only with several handsets
registrated on the base station).
Back to the previous menu or cancel programming.
Backwards deleting of characters during entry (brief
pressing deletes one character, long pressing
deletes the whole line),
Muting/unmuting the microphone during a call.