IT-4N
IT-4N
OPERATION MODES
Depending on the functionality desired, the installation of the telephone Interface for 4+N audio door
entry systems can be done in different ways.
The most common configurations follow:
Connection to the telephone line:
Typical configuration
Mixed configuration
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In an apartment with a Telefonica fixed-line, the interface can be connected under the following
configurations:
The apartment's telephone is connected to the interface's local subscriber loop, where it performs
the functions of telephone and audio door entry system.
The installation has various telephones, one connected to the interface's local subscriber loop
performing the functions of telephone and audio door entry system, and the other connected to the
telephone line, before the interface, performing the function of telephone only.
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