The bottom line is that a business’s situation is likely to change often and rapidly, each of which need a unique and applicable voicemail greeting to cover the circumstances and timeline. For example, callers shouldn’t reach a business-as-usual voicemail, and therefore expect a return call within the business day, if the subject they’re calling is out on vacation for two weeks. Such a lack of communication is a recipe to lose that caller’s trust and tarnish the brand’s reputation.
All of these questions are pertinent to their call, and it’s important that you answer any that is relevant to your specific situation. Make sure not to drag on too long going through all of the info.

Combine with a Business Intro Message to provide menu options and assist in telephone navigation. As opposed to the passive nature of Messages On Hold, voice prompts are interactive. They are designed to bring out a physical reaction from the caller, a call to action. And because voice prompts are directive, it’s important they’re concise, well written, and recorded by a professional voice artist.
You might also consider giving them the option to skip your voicemail message completely by pressing another key (again, check with IT). You also want to make callers aware what you will return their call, instead of telling them that you will try to return their call--and let them know when you are likely to do it, if possible. If necessary, provide additional or emergency information in your voicemail greetings. My dentist, for example, lists his cell phone number for emergencies.