Tanta University Faculty of Engineering Department of Electronics and Electrical Communication Engineering Packet Voice Transmission over Data Networks A Thesis Submitted for Degree of Master of Science In Electronics and Electrical Communication Engineering By Eng. Sameh Atef Napoleon Anis Engineer at the Department of Electronics and Electrical Communication Engineering, Faculty of Engineering, Tanta University Supervised by Tanta 2006 Prof. Dr. Mohamed El-Said Nasr Head of Department of Electronics and Electrical Communication Engineering Faculty of Engineering - Tanta University Ass. Prof Salah Eldein Khamis Ass. Prof. of Electrical Engineering Department of Electronics and Electrical Communication Engineering Faculty of Engineering - Tanta University