An action block that plays a tone.
If the proceed option is set to Immediately, then the sound will be played without pausing the fiber. If set to When complete, then the fiber will pause for the duration if it’s explicitly set, otherwise indefinitely.
Playback can be stopped (prematurely) by an Tone stop block.
Note! Few devices support playback in phone calls through the Voice call audio stream, use the DTMF tone play block instead.