The IP multimedia subsystem (IMS) is a basis for a significant new architecture which offers network operators the opportunity to expand their services, by integrating voice and multimedia communications and delivering them into new environments with new purposes. Basically, the IMS is an overlay network on top of IP layer that uses Session Initiation Protocol (SIP) as the primary signaling mec...

BACKGROUND Sipuleucel-T (SIP-T), which functions by stimulating cancer-specific dendritic cells, prolongs survival in men with prostate cancer. Ipilimumab (IPI) achieved a borderline survival advantage in a large randomized trial. SIP-T and IPI are potentially synergistic. PATIENTS AND METHODS Nine men with progressive metastatic castrate-resistant prostate cancer (mCRPC) were treated prospec...

Objective: Spontaneous intestinal perforations (SIP) in extremely low birth weight infants are distinctly different from necrotizing enterocolitis. The etiology of SIP is not well understood. Our objective was to identify perinatal therapeutic interventions that may increase the risk of spontaneous intestinal perforations. Methods: Medical records of extremely low birth weight infants (BW<1000g...

Calcyclin-binding protein/Siah-1-interacting protein (CacyBP/SIP), a target protein of the S100 family, which includes S100A6, S100A1, S100A12, S100B, and S100P, has been identified as a component of a novel ubiquitinylation complex leading to beta-catenin degradation. However, the function of CacyBP/SIP in gastric cancer has not been elucidated. In the present study, we prepared CacyBP/SIP ove...

Increasing the popularity of SIP based services (VoIP, IPTV, IMS infrastructure) lead to concerns about its ‎security. The main signaling protocol of next generation networks and VoIP systems is Session Initiation Protocol ‎ ‎ (SIP). Inherent vulnerabilities of SIP, misconfiguration of its related components and also its implementation ‎deficiencies cause some security concerns in SIP based inf...

The implementation of the Session Initiation Protocol (SIP)-based Voice over Internet Protocol (VoIP) and multimedia over MANET is still a challenging issue. Many routing factors affect the performance of SIP signaling and the voice Quality of Service (QoS). Node mobility in MANET causes dynamic changes to route calculations, topology, hop numbers, and the connectivity status between the corres...

The Session Initiation Protocol (SIP) server overload management has attracted interest since SIP is being widely deployed in the Next Generation Networks (NGN) as a core signaling protocol. Yet all existing SIP overload control work is focused on SIP-over-UDP, despite the fact that TCP is increasingly seen as the more viable choice of SIP transport. This paper answers the following questions: ...

Software implementing open standards like SIP evolves over time, and often during the first years of deployment, products are either immature or do not implement the whole standard but rather only a subset. As a result, messages compliant to the standard are sometimes wrongly rejected and communication fails. In this paper we describe a novel approach called Babel-SIP for increasing the rate of...

We investigate the structural and vibrational properties of Si:P thin films obtained by co-evaporation Si P in ultrahigh vacuum at room temperature followed rapid thermal annealing. The crystallization was Raman spectroscopy. Annealing temperatures larger than 950 °C leads to formation crystalline phases. Density functional theory calculations modes allow us identify orthorhombic SiP. Electron ...

This paper explores the problem of signalling efficiency of the Session Initiation Protocol in a cellular network. We present performance metrics on SIP and compare SIP signalling efficiency with ISDN Q.931. We present recent measurement results on SIP and SigComp performance and conclude that optimisation of SIP beyond SigComp is necessary for cellular access. We suggest an optimisation proces...