If you want them to leave a voicemail, tell them right from the beginning, “Please leave your name, reason your calling, and the best way to contact you.” If you want them to call you back during normal business hours, tell them, “Please call back during normal business hours.” If you want them to call back prepared for a lengthy conversation, you can say something like, “Please refer to our website’s FAQ page,” and then provide the URL. Self-service should never be underestimated.
To provide as much helpful insight to businesses as possible, we've compiled the top must-have information that should be included in your office's temporary voicemail greeting. 1. Your voicemail should be timely and relevant to the situation at hand. 2. Indicate if you’re working remotely or changing office hours temporarily. 3. Set clear, reasonable expectations for your callers about when they should expect to hear back from someone. 4. State clearly what types of matters are urgent and give examples of issues that are not. This way, patients and callers can have a good understanding of what to expect about call-backs and reduce unnecessary follow-up calls. 5. If you have made disruptions to existing appointments, you should note this, as well as how you plan to reach people to reschedule.

Another option is OpenPhone – you get a business phone number right on top of your cell phone with unlimited talk, text and professional features like voice to text, business hours and more. You can choose a local or toll-free number and have multiple numbers in the app.
VoIP is an office phone for a business. It is an acronym that stands for Voice over Internet Protocol.