Results 31 to 40 of about 17,275 (224)

Implementing voice over Internet protocol in mobile ad hoc network – analysing its features regarding efficiency, reliability and security

open access: yesThe Journal of Engineering, 2014
Providing secure and efficient real-time voice communication in mobile ad hoc network (MANET) environment is a challenging problem. Voice over Internet protocol (VoIP) has originally been developed over the past two decades for infrastructure-based ...
Naveed Ahmed Sheikh   +3 more
doaj   +1 more source

On-line Monitoring of VoIP Quality Using IPFIX

open access: yesAdvances in Electrical and Electronic Engineering, 2014
The main goal of VoIP services is to provide a reliable and high-quality voice transmission over packet networks. In order to prove the quality of VoIP transmission, several approaches were designed.
Petr Matousek, Martin Kmet, Martin Basel
doaj   +1 more source

Steganography of VoIP Streams

open access: yes, 2008
The paper concerns available steganographic techniques that can be used for creating covert channels for VoIP (Voice over Internet Protocol) streams. Apart from characterizing existing steganographic methods we provide new insights by presenting two new techniques.
Wojciech Mazurczyk   +1 more
openaire   +3 more sources

Threshold-based generic scheme for encrypted and tunneled Voice Flows Detection over IP Networks

open access: yesJournal of King Saud University: Computer and Information Sciences, 2015
VoIP usage is rapidly growing due to its cost effectiveness, dramatic functionality over the traditional telephone network and its compatibility with public switched telephone network (PSTN). In some countries, like Pakistan, the commercial usage of VoIP
M. Mazhar U. Rathore
doaj   +1 more source

A COST EFFECTIVE VOICE NETWORK USING THE VoIP TECHNOLOGY

open access: yesElectrica, 2002
In this paper, a cost effective voice network using the VoIP (Voice over Internet Protocol) technology is described. The connections of Private Branch Exchanges (PBXs) to a VoIP network, to the PSTN (Public Switched Telephone Network) and to the ISDN ...
Demir ÖNER
doaj   +2 more sources

Pengembangan Server VOIP Menggunakan FREEPBX Dan Asterisk Berbasis Raspberry PI

open access: yesProtek: Jurnal Ilmiah Teknik Elektro, 2021
Raspberry Pi is a single board computer that the author uses as a voip server based on asterisk. To use this voip network, each device must have a static IP as well as be connected to a stable network.
Nasron Nasron   +2 more
doaj   +1 more source

Analisis Data Digital Evidence pada Layanan Voice Over Internet Protocol (VoIP)

open access: yesJEPIN (Jurnal Edukasi dan Penelitian Informatika), 2016
Teknologi  VoIP  (Voice  Over  Internet  Protocol) merupakan  teknologi  yang  mampu  melewatkan  panggilan  suara, video  dan  data  dalam  jaringan  IP.
Muhamad Arsad Adam   +2 more
doaj   +1 more source

Unprincipled Principals in the Accountability Chain: Autonomy and Political Control Within Tax Administration in a Developing Country Context

open access: yesFinancial Accountability &Management, EarlyView.
ABSTRACT SDG 16 emphasizes the need for accountable institutions, often based on the assumption that public officials are accountable to politicians, who in turn are accountable to citizens. However, in many developing countries, neopatrimonial governance can weaken this accountability chain, as politicians themselves may act as “unprincipled ...
Edidiong Bassey, Emer Mulligan
wiley   +1 more source

VoIP: Making Secure Calls and Maintaining High Call Quality [PDF]

open access: yes, 2010
Modern multimedia communication tools must have high security, high availability and high quality of service (QoS). Any security implementation will directly impact on QoS.
Radmand, Pedram   +4 more
core  

A Policy-Based Admission Control Scheme for Voice over IP Networks [PDF]

open access: yes, 2009
: Problem statement: In Voice Over IP (VOIP) network, when more calls are admitted to the network, more voice packet traffic is created. Since bandwidth is always limited, this may result network congestion and/or may affect voice quality.
Sami, Alwakeel, Agung , Budi Prasetijo
core   +1 more source

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