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This paper in accordance with the authors' previous work, investigates the effect of adding extra servers in Session Initiation Protocol (SIP) signaling network on session setup in the Ip Multimedia Subsystem (IMS). The delay analysis is explored by describing the SIP signaling traffic with M/M/r notation. SIP servers overload problem is addressed and the effect of adding servers will be investigated...
The main idea of the third generation (3G) networks is to merge two of the most important communication systems: cellular networks and Internet. The IP multimedia subsystem (IMS) defined by 3GPP is a technology designed to provide robust multimedia services across roaming boundaries and over diverse access technologies. In this communication converged world, the challenging issues are security and...
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