System Functions and Features as of I7.9
Features
445
sy
d-
020
0/3.
0
– I7.
9
– 1
1
.2009
– Therefore no liability can be assumed for failed monitoring calls or for
false calls.
8. 6. 26. 4
Passive room monitoring
Passive room monitoring allows the destination user to listen into a room using a
verification call. To do so, he calls the handset on which room monitoring is acti-
vated. The handset automatically answers the call without any acoustic signalling
and switches the connection through. This is also the case when call forwarding
has been activated on the monitoring handset.
The check call is possible in all three monitoring modes. The connection type how-
ever is different:
•
Room monitoring in modes 1 and 3:
→
The call connection is one-way.
•
Room monitoring in mode 2:
→
The call connection is two-way.
During the call connection
As with calls set-up by the monitoring handset in active room monitoring the user
has the possibility of switching back and forth between one-way mode (digit 1)
and two-way mode (digit 2) once the connection has been set up with DTMF suffix
dialling. The switchover is temporary.
Terminating a call connection
There is no time limit to the duration of a verification call, which must be termi-
nated by the user on the destination phone or by the user on the monitoring hand-
set. Once the call has been cleared down, the monitoring handset switches back to
monitoring mode without delay.
Calls during passive room monitoring
If another internal or external user calls the handset on which passive room moni-
toring is activated (mode 3), the handset signals the call
visually and acoustically
and the call can be answered in the usual way.
Tip:
Passive room monitoring is indicated on the monitoring handset by the
display reading
Room monitoring for ...
; no exclamation mark is displayed.
Note: The same display is also shown with active room monitoring before
