الفهرس 
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Abstract
There are about I billion fixed telephone lines and 2 billion cell phones in the world that use the traditional public switched telephone network (PSTN) systems. Soon, they will move to networks based on open protocols- knovm as Voice over Internet Protocols (VoIP). This migration is fueled by many factors, like the tremendous growth of the Internet and the World ~Nide Web, the rapid and low cost coverage capability through wired and wireless networks, the availability of a variety of fixed and mobile Internet accessing tools (e.g., desktop, laptop, pocket pc, dual band cellular, etc), and the feasibility of integrating voice and data into a single infrastructure. The current IP networks are designed based on an open architecture to mainly support best effort applications, like file transfer, web browsing, and email, which are not delay or delay-jitter sensitive. Due to the previous nature of IP networks, new WAN technology that can suppOli QoS must be introduced for multimedia transmission. There are many WAN technologies that can be used for multimedia transmission. In this thesis we compare IPoFR, IPoA TM, MPLSoA TM and IPoMPLS models to select the best technology that can be used for multimedia transmission over the intranet.