… (IP Multimedia Subsystem). It is the service that allows a user to be informed about the
reachability, availability, … In this paper, we propose a mathematical model to analyse the system…

… Note any loss of availability or change in behavior. Pay attention to the other services protected
by the firewall, any loss of service or performance degradation there should be noted as …

… Key to optimal SIP message processing by CSCF nodes, and service logic execution by
IMS SIP application servers, are high-performance, high-availability features. The CSCF …

… The purpose of this thesis is to analysis a novel technique of “cloudifying” the OpenIMS core
infrastructure. The … The resulting database should offer high availability, and high scalability. …

… and a Service Subsystem initiates adaptation of the media stream to match the network
resource availability. We provide performance measnremen& to analyze the handover behaviour …

… Previously, we calculated the service availability based on the given availability of an individual
system … IP multimedia subsystem in 3GPP and 3GPP2: overview and scalability issues …

The IP multimedia subsystem (IMS) as an overlay architecture for IP based core networks is
the target of many trials with mobile and fixed network operators these days since it promises …

This paper presents a simulation-based optimization of signaling procedures in Internet
protocol Multimedia Subsystem (IMS). The aim is to improve the performance of signaling …

… compared the availability predicted by our analytical models to the availability measurements
… following: (1) A method to analyze the availability of local recovery architectures, relying on …