The following functions are only
available during a call:
Switch the microphone on or
off. If switched off, the per-
son on the other end of the
line cannot hear you. DTMF
signals, however, can be
You will hear a DTMF tone.
Adjust handset volume.
While the connection contin-
ues, the call duration and (if
set, p. 43) the call time/cost
See on the right.
Direct access to the main
List all held and active calls
(e.g. participants in a confer-
Making a phone call
Activate via the call menu, see on
You can enter control codes (digits)
during a call so that an answering
machine can be controlled remotely.
These digits are directly transmitted
as DTMF signals.
Control codes (DTMF tones) stored
in the Addressbook (p. 19)/Phone-
book (p. 22), can also be entered.