You cannot, @Rhum , however you can set an extended absence in such a way as to avoid callers from leaving messages.
- Call voicemail and log in with your PIN,
- press 3 (manage greetings),
- then 4 (manage extended absence greeting),
- then 2 (record a new extended absence greeting) and record a message that indicates to your caller you are not accepting messages,
- then press 4 to enable extended absence,
- lastly, press 5 to disallow anyone from leaving you a message.
