Callee type detection is a feature of the Plum VoiceXML platform that detects whether a person or voicemail system answers an outbound call from an IVR application. Callee type detection provides the results of an outbound call by reporting if a person, fax machine, or voicemail answered the phone or if the call received a busy signal, a no answer, or was intercepted by an operator.
Callee type detection makes it possible for developers of outbound IVR applications to build dynamics scripts that act on callee data. For instance, a developer might want to deliver two separate messages; one that’s presented to a live person and one that’s designed to be left on a voicemail system. Also, callee type is used as a way to measure the success of an outbound IVR campaign by reporting how many people received a message from the IVR system.
More information about callee type can be found here: http://www.plumvoice.com/docs/hosting/outbounddevguide.htm
