What device is used to multiplex connected devices into a single signal for transmission on a network?

A concentrator is designed to aggregate multiple data signals from various connected devices into a single signal suitable for transmission over a network. This functionality allows for efficient data transfer and helps manage network traffic by consolidating connections. Concentrators serve to improve bandwidth utilization and minimize the number of paths that data must take to reach its destination, essentially simplifying network management.

In contrasting roles, a router directs data packets between different networks, a switch connects devices within the same network segment, and a repeater amplifies signals to extend the range of a network without aggregating devices into a single signal. Each of these devices serves unique functions, but none fulfill the specific role of combining signals from multiple devices for transmission like a concentrator does.