A circuit-switched network requires no setup time before data transfer can begin.

A circuit-switched network guarantees lower end-to-end delay than any packet-switched network under all conditions.

A circuit-switched network dynamically shares link capacity among multiple conversations at once.

A circuit-switched network can guarantee a certain amount of end-to-end bandwidth for the duration of a call. Most packet-switched networks today (including the Internet) cannot make any end-to-end guarantees for bandwidth.