System Functions and Features as of I7.9
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During the call connection
During the call connection the destination user can use DTMF suffix dialling to
switch back and forth between one-way and two-way mode and also cancel the
time limit of 1 minute on the call connection:
•
Digit 1: One-way call connection (modus 1)
•
Digit 2: Two-way call connection (modus 2)
•
Digit 5: Cancelling the time limit on the call connection.
The mode switchover and time limit cancellation apply to this connection only. Thereaf-
ter both the mode of the originally selected procedure and the time limits are reactivated.
Actively terminating the call connection
Besides automatically terminating the call after 1 minute, both the destination user
and the user at the monitoring handset can prematurely terminate the call connection.
In all cases the room monitoring microphone is reactivated after a delay of 1 minute.
Calls during active room monitoring
If an internal or external user calls the monitoring handset, the handset signals the
call
only visually
, not acoustically. The call can be answered on the monitoring
handset in the usual way. The monitoring handset can also be used to make an out-
going call. Once the call has been cleared down, the monitoring handset switches
back to monitoring mode without delay.
If the destination user calls the monitoring handset, the handset temporarily
switches to passive room monitoring (see next chapter).
Tips:
– Room monitoring is inactive while the monitoring handset is ringing.
This gap in monitoring can be prevented by activating call forwarding
on the monitoring handset. The destination user can still make a verifi-
cation call as call forwarding does not apply to him.
– In each case the room monitoring microphone is reactivated after the
delay times. This is indicated by the flashing exclamation mark on the
display of the monitoring handset.
Notes:
– Room monitoring based on DECT technology cannot be 100% reliable.
– Extraneous noises in the monitored room call lead to false calls.