The rapid growth of communications and multimedia network services such as Voice over
Internet Protocol (VoIP) have caused these networks to face a crisis in resources from two …

Deploying multiple controllers in the control panel of software-defined networks increases
scalability, but it brings challenges. Several articles have tried to solve this problem. But all …

Network functions virtualization provides opportunities to design, deploy, and manage
networking services. It utilizes cloud computing virtualization services that run on high …

Summary Nowadays, the Voice Over IP (VoIP) technology is an important component of the
communications industry as well as a low‐cost alternative to Public Switched Telephone …

Abstract The Session Initiation Protocol is an IP based application level signaling protocol.
SIP is used for locating end users, establishing, modifying and closing multimedia sessions …

The extent and diversity of systems, provided by IP networks, have made various
technologies approach integrating different types of access networks and convert to the next …

We propose a deterministic fluid model for the operation of two tandem SIP proxies in
overload conditions. Using our model, we categorize overload scenarios into several …

One of the most popular and widely applied protocols on multimedia networks is the Session
Initiation Protocol (SIP) to create, modify, and terminate the sessions. SIP is the platform of …

The rapid demand on the VOIP communication lead to the increase of the development of
information security and the offered quality. Therefore, information technology has increased …

The rapid growth of communications and multimedia network services such as Voice over
Internet Protocol (VoIP) have caused these networks to face a crisis in resources from two …