NETWORK PLANNING OF A VOIP-CABLE PBX - The Use of Data Profiling Techniques for an Efficient Network Planning Topics: Modeling & Simulation of Communication Networks and Systems; Network Management; Traffic Measurement, Analysis, Modeling and Visualization; Voip Protocols and Services In Proceedings of the International Conference on Data Communication Networking and Optical Communication System - Volume 0ICETE, 85-88, 2011 , Seville, Spain