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

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

Routing refers to the process of directing calls through the network to the appropriate destination based on the dialed number and the available paths in the network. It ensures that the call is sent towards the correct endpoint.

Switching is the mechanism by which the telephone switch creates a connection between the calling party and the receiving party. This function establishes and maintains the communication path during the call, allowing for the seamless exchange of voice data.

Signaling involves the transmission of information needed to establish and manage calls, such as dialing, alerting, and ending the call. This function includes the exchange of control signals that coordinate the necessary steps for call setup and teardown.

Understanding these functions is crucial because they highlight how calls are efficiently managed within telecommunication networks, ensuring reliable communication between callers and recipients.