How is the NT1-PLUS terminal block programmed with an Elvox telephone switchboard?

The terminal block is programmed by the telecom company technicians. The settings that must be programmed on the terminal block are linked to the ISDN line by way of a single number. In this case the call must leave the terminal block with alternative distribution, in other words an incoming call must ring just one telephone at a time. The called user must engage the first free line, while a second call must engage the second free line.

Operation in which both telephones ring simultaneously is not correct.