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9. 6. 26. 3
Active room monitoring
When activating room monitoring the user specifies whether the call connection
should be one-way (mode 1) or two-way (mode 2). One-way means that only the
transmission path of the monitoring phone is switched through; with a two-way
call connection the reception path is also switched through (in hands-free mode).
The duration of the call connection is limited to 1 minute.
As an option the user can specify the microphone's noise sensitivity level for trigge-
ring the call:
• Level 1: low sensitivity (high noise level required)
• Level 2: average sensitivity (average noise level required)
• Level 3: high sensitivity (low noise level required)
If no level is indicated, the value last selected is used.
The appropriate level has to be determined empirically on site.
The microphone used for room monitoring is switched on with a 10 second time
lag (Office 135). On cordless phones of the Aastra 600d series the delay is configu-
rable (10, 20 or 30 s). The time lag allows the user to position the cordless phone
and then leave the room.
Triggering the call
If a noise exceeds the configured level for more than 2 seconds, a call is immedia-
tely 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:
Funciones y prestaciones del sistema a partir de R2.1
syd-0370/1.2 – R2.1 – 07.2012
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