Abstract: The present invention relates to a communication node and method for connecting and maintaining a call between a caller device and a callee device. The communication node comprises a session controller module and a plurality of internal SIP UA (Session Initiation Protocol User Agent) servers. The session controller module is adapted to remain in communication with the caller device and the callee device through a whole duration of the call. The plurality of internal SIP UA servers is adapted to communicate with the session controller module by open protocol.

Abstract: The present invention relates to a method for performing call progress analysis, a call progress analyzer and a caller for handling call progress results. The method and the call progress analyzer are adapted to receive call related information, order the received call related information, and determine there from at least one probable outcome for the call related information, along with at least one corresponding confidence level. For doing so, the call progress analyzer includes an input, a buffer for ordering the received call related information, an output evaluating module for evaluating and determining the at least one probable outcome and the at least one confidence level thereof. The call progress analyzer further includes an output for sending the at least one probable outcome and at least one corresponding confidence level to a caller related to the received call related information.

Abstract: A computerized method is provided for electronically directing a call to a class, such that an utterance spoken by a speaker and received by a call-routing system is classified by the call-routing system as being associated with the class, such that the call-routing system includes a speech-recognition module, a feature-extraction module, and a classification module. The method includes extracting features from recognized speech; weighting elements of a feature vector with respective speech-recognition scores, wherein each weighting element is associated with one of the features; ranking classes to which the features are associated; and electronically directing the call to a highest-ranking class.