S-Series VoIP PBX Administrator Guide91Disable Forward When Busy Dial this feature code to disable when busy call forwarding.The default feature code is *072.Enable Forward No Answer Dial this feature code to forward calls to voicemail or a designatednumber when no answer. For example: dial *73 to forward calls tovoicemail when no answer, and dial *73500 to forward all calls tonumber 500 when no answer (this number does cont includeprefix, if you are required to dial with prefix, you need to configureit in Call Forwarding in Edit Extension window).The default feature code is *73.Disable Forward No Answer Dial this feature code to disable no answer call forwarding.The default feature code is *073.Call MonitorListen Dial this feature code and the monitored extension number toinitiate Listen monitoring. In this mode, the monitor can only listento the call but can't talk.The default feature code is *90.Note: to monitor an extension, you need to configure the MonitorSettings for this extension first.Whisper Dial this feature code and the monitored extension number toinitiate Whisper monitoring. In this mode, the monitor can listen toand talk with the monitored extension without being heard by theother party.The default feature code is *91.Note: to monitor an extension, you need to configure the MonitorSettings for this extension first.Barge-in Dial this feature code and the monitored extension number toinitiate Barge-in monitoring. In this mode, the monitor can listen toand talk with both parties.The default feature code is *92.Note: to monitor an extension, you need to configure the MonitorSettings for this extension first.DNDEnable Do Not Disturb Dial this feature code to put the extension in Do Not Disturb state.The default feature code is *74.Disable Do Not Disturb Dial this feature code to take the extension out of Do Not Disturbstate.The default feature doe is *074.VoicemailThe configurations of voicemail can be globally set up and managed on the Voicemail page. Go toSettings > PBX > General > Voicemail, you can configure the Message Options, Greeting Optionsand Playback Options.