When you set up your voicemail, you can choose between using a personal greeting or one generated by the system. You can use the same or different messages whether your line is busy or if you’re unable to answer your phone. Select Personal if you want to use your own message, then click Browse to upload a WAV file of your recording. Select Personal if you want to use your own message, then click Browse to upload a WAV file of your recording.
Does your organization have a witty catchphrase or slogan? If so, use that to your advantage. Here is one that could be tailored towards a custom software company:

Users often don’t invest enough time into their messages, resulting in incomplete, unprofessional, or otherwise under-whelming greetings. Sure, crafting a greeting doesn’t sound all that complicated; however, there are a number of pitfalls users can fall into—i.e. informality, terseness, sincerity, lack of direction, and more. While none of these sound too catastrophic, they are often interrelated. As such, they tend to worsen any problem. For example, humor can cause informality, worsen ambiguity, and weaken sincerity. That being said, users should strive to avoid ALL these pitfalls.
12.) Benvenuti alla John Doe. Potete contattarci dal Lunedì al Venerdì dalle 8am alle 12.30pm e dall’1pm alle 4.30pm. Al momento non possiamo rispondere personalmente alla vostra chiamata. Si prega di lasciare un messaggio con il vostro nome e numero di telefono e vi richiameremo al più presto possibile. Per casi urgenti, potete raggiungerci al numero 0821 91039-1211. Grazie.