If you’ve already created a custom voicemail on your iPhone, you can tap Play to see how your voicemail sounds. If you’re interested in creating a new message, tap the Custom button. From here, you can start recording your message by tapping Record and tapping Stop whenever you’re finished. Once you’re finished recording, tap on Play to make sure the message comes across as you’d like and hit Save (in the upper right) to save it as your voicemail.
A business voicemail greeting or message should be of a high-quality sound recording that sounds very clear and free of any background noise. This can only be achieved if the recording is done in a sound studio with high-quality recording equipment. A professional voice-over artist would either have access to a professional recording studio or own a home recording setup.

9.) Benvenuti alla John Doe. Siamo spiacenti, ma nessuno è in ufficio al momento. Si prega di lasciare il vostro nome e numero di telefono dopo il segnale. Vi richiameremo al più presto possibile.
When recording your greeting, speak a little more slowly and clearly than you normally would so there’s no danger of your callers misunderstanding you.