Final answer:
A DTM allows an automated access control system to communicate with a control center. It is used in computer networks to combine multiple input signals into a single multiplexed output signal.
Step-by-step explanation:
True. A DTM (Data Transmission Multiplexer) allows an automated access control system to communicate with a control center. It is a device used in computer networks to combine multiple input signals into a single multiplexed output signal. In the context of an access control system, the DTM would be responsible for transmitting data between the access control devices (such as card readers or biometric scanners) and the control center, which manages the access permissions.