What are the three basic functions of a telephone switch when it processes calls?

The three basic functions of a telephone switch when it processes calls are signaling, routing, and switching.

Signaling refers to the exchange of information between the calling and receiving parties, helping establish the call. This process involves sending control signals to manage the setup and teardown of calls.

Routing involves determining the most efficient path for the call to reach its destination. The switch analyzes the number dialed and decides the best route through the network infrastructure.

Switching is the actual forwarding of the call through the network from the originating switch to the destination. This process connects the two parties, allowing for communication to occur.

These functions are essential for effective call management in telecommunications, ensuring that calls are properly set up, directed, and maintained throughout their duration. Other options suggest processes related to call handling but do not encompass the fundamental technical operations performed by a telephone switch.