A system and related method for targeted content delivery based on real time communication session analysis, including one or more of the following: a behavior analyzer that formulates a behavioral profile of a user of a terminal device that requests and receives a real time communication; a targeted content delivery infrastructure that establishes behavioral profile data regarding the user and delivers targeted content to the user; and a packet-based communication network in communication with the terminal device, the communication network comparing collected traffic flows to known real time communication protocols, identifying one or more matches between the collected traffic flows and the known real time communication protocols, resulting in one or more identified real time communication sessions, identifying signaling information flow and optionally a bearer channel of the one or more identified real time communication sessions, and extracting key information from the identified signaling information flow and optional bearer channel.