Users often don’t invest enough time into their messages, resulting in incomplete, unprofessional, or otherwise under-whelming greetings. Sure, crafting a greeting doesn’t sound all that complicated; however, there are a number of pitfalls users can fall into—i.e. informality, terseness, sincerity, lack of direction, and more. While none of these sound too catastrophic, they are often interrelated. As such, they tend to worsen any problem. For example, humor can cause informality, worsen ambiguity, and weaken sincerity. That being said, users should strive to avoid ALL these pitfalls.
A lot of care and consideration should be given to who will be providing the voiceover for a business’ audio recordings before the selection is made.

To create or change outgoing voicemail messages for individual extensions or for a Ring Group (multiple extensions).
More information can be found at Set up Cloud PBX voicemail - Admin help. Let your users and helpdesk know Don’t forget to inform your users and your helpdesk. The page Check Skype for Business voicemail and options, describes how users can set up and use their voicemail. Make sure users are familiar on how to use it, and that your helpdesk