2.) Sie sind mit der Mailbox von Herrn Mustermann verbunden. Bitte hinterlassen Sie eine Nachricht, damit Sie Herr Mustermann so rasch wie möglich zurückrufen kann. Vielen Dank für Ihren Anruf.
Once you have your message, you need to actually record it. The exact process varies depending on whether you’re using a cell phone or office phone, but here’s the basic process: Press the voicemail button, or press and hold 1 on most cell phones. Enter your password. Record your message. Listen to the message you just recorded. Follow the prompts to save your message. Following Up on Voicemail Messages

We have collected 10 of the best voicemail greetings for business applications that we could find. Our goal is to demystify this tricky form of communication, which we detail at the end of this post. But first, it will be useful to go over some general suggestions to keep in mind if you plan to write a voicemail greeting for your business.
Voicemails are recorded on your network as audio files and are downloaded to your phone. They are then played back in the usual way, just through the phone app rather than through the music app. Any voicemails you have are visible in the Voicemail app and should be able to be played back by pressing the play icon. This doesn’t always work, though. Here are some fixes you might try.