Cue to begin a voicemail message (4)

I believe the answer is:

tone

(Other definitions for tone that I've seen before include "Sound signal on a telephone" , "Vocal sound of note" , "Quality or character of voice" , "A pitch of note" , "Musical sound of note" .)

I've seen this clue in the Newsday.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.