3.1.3. MWI (Message Waiting Indicator)

Please check your voicemail messages by clicking the button "Call history". Subsequently, a window appears which you're able to check your voicemail messages with.

The Message Waiting Indicator counts all new voicebox messages on your PBX.
  
1.) Select a SIP account and
  
2.) click the green phone button to call your PBX voicebox.