IT-4N
IT-4N
Connection to a PABX extension
Connection to a PABX extension with divert mode always enabled
PABX
PSTN
The extension that is connected to the interface's local subscriber loop will have both telephone and
audio door entry system functionality. With the call divert mode enabled, the extensions that are
connected to the subscriber loop can be configured in the interface to receive calls from the
telephone line and from the audio door entry system. A maximum of three telephones can be
configured.
In this type of installation no telephone is connected to the local subscriber loop given that in this
mode of operation, the audio door entry system will always be connected to the PABX and call
diverting will always be enabled.
In this mode of operation, when a call is received from the audio door entry system the interface will
divert it to the programmed telephones, which could be extensions of the PABX or other telephones
on exterior lines.
The interface can be configured for divert mode always enabled via an exterior configuration dip
switch which the installer can access without having to open the cover.
47
OPERATION MODES
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*
8
9
7
4
5
6
3
2
1
#
0
*