3.) Это почтовый ящик г-на Пупкина. Пожалуйста, оставьте сообщение или позвоните по этому номеру снова позже. Спасибо за ваше понимание.
Great question! Although I don’t know if there is a specific function for this on your particular phone, the best way to save the message is the simplest. Turn up the sound as high as you can and record it onto a digital recorder (like you would use for a lecture), a cassette recorder or your cell phone if you have a voice recorder on it. Then save it as an MP3 on to your computer for safe keeping. You can also Google your vtech model number to see if you can find an owner’s manual. They might have a way to save a recording in there. Probably not, but it’s worth a shot.

By default beginning April 2017, voicemail transcription is available for all Phone System in Microsoft 365 users. When you receive a voicemail, the message will be transcribed in the body of the voicemail email you receive in your mailbox. If you do not want to have transcription for your messages, ask your admin to disable it for you.
Some networks will provide a special number for you to ring, although with O2 and some others you just have to dial your own mobile phone number and then hit the * key to enter the voicemail system. Again, you’ll need to make sure that you’ve set up a secure PIN for your voicemail to make sure that none of Rupert Murdoch’s minions can hack into your voicemail from the comfort of their desk.