In certain situations, it’s a good idea to let a call go to voicemail. If you’re in a loud area, unable to spend 10-15 minutes talking, or are otherwise distracted, don’t answer. Recruiters who cold-call candidates will understand that you’re simply unavailable – but make sure to return calls in a timely manner. If possible, call back during regular business hours.
When you have new voicemail, the Phone tab in the Skype for Business main window displays the number of your messages. See Contact Card opens the caller's contact card, which lists their phone number, email address, office location, and so on.

Professional business voicemail greetings are significantly different from ones you record for individual use and complete your professional business image. They’re more generic in nature and designed to provide information to the caller while ensuring they leave a message. Where possible, explain when you expect to return calls. Typically, they’re recorded for the following:
The bank blew past its goal of eliminating half of its voice mail boxes and to date has eliminated about two-thirds. Across the whole bank so far, that's over $8 million in annual savings. Coca-Cola recently made a similar move and only 6 percent of employees chose to keep voice mail.