A DACT serving the protected premises shall only require how many telephone lines?

A Digital Alarm Communicator Transmitter (DACT) serving a protected premises typically requires only one telephone line for its operation. The primary function of a DACT is to transmit alarm signals and communication data from the protected site to a monitoring facility or central station. It does this by using a single analog telephone line to send alarm signals, system status, and test signals through established protocols.

Having one dedicated line simplifies installation and reduces costs compared to multiple lines. While using two or more lines could provide redundancy and potentially increase reliability under certain situations, it is not a requirement for normal operation. Therefore, the standard expectation for a DACT set up for fire alarm communication is that one line is sufficient to perform its necessary functions effectively.