Tone - select the right tone for your business brand. If your target market are young millennials, then the script would most likely include some slang words, be quite laid back and the script would be recorded in an energetic tone. If you primarily service the business market, then the script would be more articulate and recorded with a more professional tone.
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.

Creating a voicemail greeting might not be fun, but with the scripts I’ve shared, you should have an easier time. No need to practice time and time again — simply plug in your name, company title, and other details, then read it out loud to your phone’s voicemail greeting recorder. With a professional greeting, you’ll continue nurturing prospects even if you don’t pick up the phone.
2. Professional voicemail greetings for your business cell phone number. It’s a good practice for each of your team members to have their own personal business phone numbers.