What is the function of a duplex system in communications?

The function of a duplex system in communications is to send and receive data over the same frequency. This capability allows for simultaneous two-way communication, which is essential in emergency medical services and other communication-intensive professions. This means that while one party is transmitting information, the other party can receive it at the same time without delay, facilitating a more efficient exchange of information.

In contrast, some systems may only transmit data on a single frequency or might require the use of separate frequencies for sending and receiving, thus not providing the same level of immediacy in communication. Additionally, while audio quality can be improved with various technologies, enhancing audio does not specifically define what a duplex system does. The primary characteristic of a duplex communication system is its ability to manage two-way communication on the same frequency concurrently.