Silent Automatic Multiple Number Dialling
This mode fully conceals the fact that a telephone call is made. When a button is
pressed, the loudspeaker is off and no PBX or dialling tone can be heard. The
loudspeaker is switched on when the called subscriber confirms connection (by
pressing
on its telephone). Thus, a potential thief cannot establish whether the
called person is in the building or not.
Otherwise, the function is the same as with Automatic Multiple Number Dialling with
Confirmation.
2N ® Helios Uni Identification
There are situations in which the calling person does not want to or cannot speak for
security reasons in the automatic dialling mode. In these cases, the intercom can play
back a message stored in its memory. The test series includes the "Wait please,
connection is being established" message. Later, more messages will be available to
the user.
DTMF Control
If Automatic Multiple Number Dialling with Confirmation or Silent Automatic Multiple
Number Dialling is enabled, the intercom can be controlled as shown in the table
below. For convenience, commands 1 to 5 are arranged as they are usually used.
DTMF
Character
FUNCTION
Confirmation indicating to the intercom that the call was successful. The intercom
sends its confirmation signal, the call goes on until the end of timeout and any of the
following commands can be used.
Message
(during playback).
muting
You may not speak while the intercom is playing back the message
WARNING!
!!!
Message
(once)
re-plays
.
or
Call extension: a call is extended by 30 seconds by this command. Can be used
repeatedly.
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