When recording a personalized voicemail greeting on your office phone, your greeting should include only the company name and your extension number. When recording a personalized voicemail greeting on your office phone, your greeting should include only the company name and your extension number. State your name and spell it out if you’re asking callers to follow up with written correspondence. State your company name and department name. Let callers know that you cannot take their call right now. Invite them to leave a message. What should I record on my work voicemail?
Website: https://www.voicemailsforever.com/guide/How-To-Record-A-Voicemail-From-Your-Landline-Or-Office-Voicemailbox

To use a different greeting you already recorded or switch back to the default greeting: On your Android device, open the Voice app . At the top left, tap Menu Settings. In the Voicemail section, tap Voicemail greeting. Next to the greeting you want to use, tap More Set as active.
There was a time once we were mad for the funny voicemail greetings, creative voicemail greetings, it seems like that time has gone, now everyone leaves WhatsApp and iMessage instead of voicemails. For the exceptions, we have prepared this article to set up custom voicemail greetings on iOS with some sample Voicemail Greeting messages for iPhone, which takes almost less than two minutes if you correctly follow the steps. Undoubtedly, many professionals still actively use the voicemail feature for office purposes.