46
Connection to an ADSL line:
In apartments with ADSL lines, the interface should be connected via the splitter supplied by the ISP.
ADSL is not available after the interface.
Computer
Telephone/Audio Door entry system
Connection to PABXs:
As shown in the following examples, the telephone interface can also be connected to a PABX's input
line, or to its extensions, as long as these are analogue lines:
The extensions that receive calls originating from line 1 are configured in the PABX to receive calls
from the PSTN line and calls from the audio door entry system.
L1
PSTN
L2
L3
Ext.1
Telephone
Ext.2
Telephone/audio
Door entry system
ADSL line
Splitter
IT-4N
Local subscriber loop
Door panel 4+N
Lock release
Connection to a PABX's input line
Telephone lines
2)*:
Lock release
Ext.3
Ext.4
Telephone
Telephone/Audio
Door entry system
OPERATION MODES
PSTN
4 N
-
IT
4+N
TF-104
2
Lock release
TF-104
5+N
TF-104
2
IT-4N
4 N
-
IT
4+N
Local subscriber loop
Door panel 4+N
TF-104
Telephones 4+N
4+N
Door panel 4+N
TF-104
Telephones 4+N
4+N
Door panel 4+N
Lock release
5+N
TF-104