Set the right tone for the call by introducing your business in a welcoming manner. The message can be played either by itself or as an intro to IVR prompts.
Alerts you with a special tone when someone else is calling you while you are already on the phone.

In both the consumer and business world, it's becoming more common to hear voicemail prompts that warn callers that their messages might not be heard for a while and suggest that they send a text message or email instead.
I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have become more articulate, poised, and self-assured. But hear my voicemail recording, and you’d think I was still new to the work world, a little unsure of myself — and probably not an authority. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.