Features
490
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Triggering the call
If a noise exceeds the configured level for more than 2 seconds, a call is immedi-
ately triggered to the destination user.
• If the destination user is busy, the room monitoring microphone is re-activated
after a 15 s delay.
• If the destination user still does not answer, the call is terminated and the room
monitoring microphone is reactivated after a delay of 1 minute.
Notes:
– In both cases after the unsuccessful call the configured level has to be
exceeded again for a call to be triggered.
– An ATAS alarm is also generated in addition to the call triggering. Use
of the protocol is subject to
ATAS Interface
and
ATASpro Interface
licences.
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.
Thereafter both the mode of the originally selected function 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 phone can prematurely terminate the call con-
nection. 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 phone, the handset signals the
call
only visually
, not acoustically. The call can be answered on the monitoring
phone in the usual way. The monitoring phone can also be used to make an outgo-