switel DE 27 series, Operating Instructions Manual

Page: 119 / 140

GB
15
Telephoning
Call timer
Your handset automatically times the duration of every call in hours, minutes
and seconds.
Setting the earpiece/loudspeaker volume
/
During a call you can adjust the volume in 5 levels.
This setting will remain at the last selected level when you
end the call.
Muting the microphone
During a call you can switch your handset’s microphone off.
The display shows
MUTED
.
To unmute press the c softkey again.
Internal calls
☞
Internal calls, transfers and conference calls are only possible if multiple
handsets are registered. If this is not the case
NOT POSSIBLE
will be
indicated on the display.
Making an internal call
Press the
Internal
softkey. If two handsets are registrated to
the base station the other handset will be called immediately.
If three or more handsets are registrated to the base station
their internal numbers will be displayed (for example 2 3 4).
Press the internal number you want to call.
If you press “9“ in the case of several registered handsets all
will be called at the same time.