System and method for transitioning a voice session in progress over a communication network into a voice and data session

摘要

A system for effecting transition of a private branch exchange (PBX) system-hosted voice only telephone session in progress into a voice session optionally enhanced with a data collaboration channel hosted by a conference bridge includes a call escalation system (CES) application for determining call state of the voice session to be transitioned and for executing a sequence of command requests for effecting the transition based on a trigger event; and a control application server for controlling the PBX switch.