Abstract
IP Multimedia Subsystem (IMS) is very impor-tant due to the critical role it plays in the Next Generation Network (NGN) of the Fixed and Mobile Networks. Voice traffic in IMS will be served using Internet Protocol (IP) which is called Voice over IP (VoIP). This paper uses the E-Model, (ITU-T G.107), as an optimization tool to select network and voice parameters like coding scheme, packet loss limitations, and link utilization level in IMS Network. The goal is to deliver guaranteed Quality of Service for voice while maximizing the number of users served.This optimiza-tion can be used to determine the optimal configuration for a Voice over IP in IMS network OPNET is the optimization tools that is used in this paper. The paper also provides new equations can be added to enhance E-Model to relate packet loss to the level of Equipment Impairment (Ie) with different codecs.
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