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.
Another option for many professionals is to use an answering service. Instead of having an answering machine that records calls, you can hire a third-party service to record and deliver your messages. This option might be best for professionals who receive many business calls in a day or for large organizations that have many departments. You might also Like Post your comments Answering machines are built in to the base unit of some telephone systems. Answering machines allow callers to record messages for the owner.

What converse would you resolve to raise when speaking with prospects? This also can be skilled, casual, or even droll.
“Hey there! This is [name] at [XYZ company]. Thank you for calling. I can’t take your call right now but if you leave your name, contact info and reason for calling, I’ll call you back right away. Take care and speak with you soon!”