While recording a message, make sure that you don’t yell into the phone and make sure you record in a quiet place. Setting this up in a restaurant will make your iPhone voicemail greeting sound like you are actually picking up the phone.
Website: https://support.microsoft.com/en-us/office/check-skype-for-business-voicemail-and-options-2deea7f8-831f-4e85-a0d4-b34da55945a8

If you require any additional assistance, please feel free to call our office and speak to a member of our dedicated support team on 0845 8739900. Your voicemail is a familiar tool for getting the most out of your calling experience in Teams. To access your voicemail, go to Calls > History and then select Voicemail.
Android phones can access voicemail by holding down the 1 key on the dial pad until the phone dials your 10-digit phone number. You will automatically connect to your mailbox and be prompted to enter your temporary password; this password is the last 4 digits of your phone number followed by the # key. Start the Google Voice app. Tap the three horizontal lines at the top left of the screen (sometimes called a hamburger menu), and then tap “Settings.” In the Voicemail section, tap “Voicemail greeting.” Tap “Record a greeting.” How do I access my voicemail? To call your voicemail on an Android phone, simply open your phone’s dial pad and hold your finger down on the “1” key. You can also call your voicemail from a different phone by calling your own number and tapping the pound key. How do you check your voicemail?