40. The system according to claim 38 , wherein said bit-stream similarity evaluation module is adapted to adjust the similarity criterion if it is determined that the real-time conversational media session is associated with a certain originator or with a certain group of originators.
38. The system according to claim 35 , wherein said bit-stream similarity evaluation module is adapted to iterate the calculation of the progressive similarity scores, and as part of each iteration, a progressive similarity score is calculated for a different instant during the progress of the real-time conversational media session, and wherein said calculating is continued until said bit-stream similarity evaluation module concludes similarity or dissimilarity between the real-time conversational media session data and the reference data.