Results 21 to 30 of about 22,939 (222)
How green is IP-telephony? [PDF]
Proceedings of the first ACM SIGCOMM workshop on Green networking, 2010 With constantly increasing costs of energy, we ask ourselves what we can say about the energy efficiency of existing VoIP systems. To answer that question, we gather information about the existing client-server and peer-to-peer VoIP systems, build energy models for these systems, and evaluate their power consumption and relative energy efficiency ...
Salman Abdul Baset +6 more
openaire +1 more source
A Security Analysis on OpenSIPS
IJAIT (International Journal of Applied Information Technology), 2020 IP Telephony, Internet Telephony, Digital Phone or often also called VoIP (Voice Over Internet Protocol) is a technology that allows long-distance voice conversations with the Internet.
Gandeva Bayu Satrya +1 more
doaj +1 more source
Designs, 2022 This article deals with quality of service (QoS) in internet protocol (IP) telephony by applying software-defined networking (SDN) tools. The authors develop a new design that deterministically classifies real-time protocol (RTP) streams based on data ...
Dalibor Zeman +3 more
doaj +1 more source
Deregulating fixed voice services? Empirical evidence from the European Union [PDF]
, 2014 This paper deals with the relationship between the traditional fixed-line, mobile and Voice over IP telephony in the EU.We estimate the supply and demand for fixed-line telephony using data on 25 EU member states for the 2006:Q2 - 2011:Q4 period ...
Lange, Mirjam R. J., Šaric, Amela
core +2 more sources
METHODS FOR ENHANCING SECURITY IN IP TELEPHONY
Information and Telecommunication SciencesBackground. The widespread adoption of IP telephony in corporate and operator networks has led to an increased risk of cyber threats such as fraud, eavesdropping, service interruptions and unauthorised access.
Serhii Fedorov, Rina Novogrudskaya
doaj +1 more source
Building Model for the University of Mosul Computer Network Using OPNET Simulator
Tikrit Journal of Engineering Sciences, 2011 This paper aims at establishing a model in OPNET (Optimized Network Engineering Tool) simulator for the University of Mosul computer network. The proposed network model was made up of two routers (Cisco 2600), core switch (Cisco6509), two servers, ip 32 ...
Modhar A. Hammoudi
doaj +1 more source
Covert Channels in SIP for VoIP signalling
, 2008 In this paper, we evaluate available steganographic techniques for SIP (Session Initiation Protocol) that can be used for creating covert channels during signaling phase of VoIP (Voice over IP) call.
B. Lampson +3 more
core +1 more source
9-1-1 Calls for Voice-over-IP [PDF]
, 2003 This document enumerates some of the major opportunities and challenges for providing emergency call (9-1-1) services using IP technology. In particular, all VoIP devices are effectively mobile. The same IP telephony device works anywhere in the Internet,
Schulzrinne, Henning G.
core +2 more sources
Fraud in a digital society in the context of social change
Цифровая социология, 2023 The article analyzes the problems of fraud in the modern digital society in the context of social changes caused by both the COVID-19 pandemic and the current geopolitical situation.
A. Yu. Sergeyev, O. V. Shirokova
doaj +1 more source
Clinical, histological, and serological predictors of renal function loss in lupus nephritis.
Arthritis Care &Research, Accepted Article.Objective Kidney survival is the ultimate goal in lupus nephritis (LN) management, but long‐term predictors remain inadequately studied, requiring long‐term follow‐up. This study aimed to identify baseline and early longitudinal predictors of kidney survival in the Accelerating Medicines Partnership LN longitudinal cohort.
Shangzhu Zhang +21 more
wiley +1 more source