Using concise and simple words in your scripting helps ensure callers can comprehend what is being said. Although a complete on-hold message can be quite lengthy, it should include concise and to the point single messages. Aim to get each message across in around 35 to 40 words. Remember, what may read great in written word doesn't necessary sound great said out aloud.
@Fa5t3r - I would try a wide range of different tones when recording and play them back to see what goes over the best and what projects the image you want people to hear. Remember that some people may be going to hear this message over and over again depending on how often they have to call you so you want it to be very pleasant and not at all irritating.

5.) Tutti i nostri dipendenti sono impegnati con altri clienti. Si prega di lasciare un messaggio o di inviare una e-mail – vi contatteremo al più presto possibile. Vi ringraziamo per la vostra chiamata – Arrivederci.
4. Hi, thanks for calling GetVoIP. We would love to help you out in anyway we can, but these Holidays are keeping us from getting anything done! We will be returning to the office after the New Year on Jan 2nd, but feel free to head over to our website GetVoIP.com to learn what you can. Happy holidays!