Results 1 to 10 of about 6,078 (309)

Steganography and Steganalysis in Voice over IP: A Review [PDF]

open access: yesSensors, 2021
The rapid advance and popularization of VoIP (Voice over IP) has also brought security issues. VoIP-based secure voice communication has two sides: first, for legitimate users, the secret voice can be embedded in the carrier and transmitted safely in the
Zhijun Wu   +3 more
doaj   +2 more sources

An Enhanced Steganographic Code and its Application in Voice-Over-IP Steganography [PDF]

open access: goldIEEE Access, 2019
Voice-over IP (VoIP) technology is a kind of digital transmission technology based on IP network. It is one of the important methods to use voice service in VoIP as steganographic carrier to ensure secure transmission.
Lejun Zhang   +4 more
doaj   +2 more sources

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

open access: hybridJournal 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   +2 more sources

Energy-Efficient UAVs Deployment for QoS-Guaranteed VoWiFi Service

open access: yesSensors, 2020
This paper formulates a new problem for the optimal placement of Unmanned Aerial Vehicles (UAVs) geared towards wireless coverage provision for Voice over WiFi (VoWiFi) service to a set of ground users confined in an open area.
Vicente Mayor   +3 more
doaj   +1 more source

Voice over IP: Wettbewerbspolitik und Marktrecht

open access: green, 2005
Traditionally, there have been two separate telecommunications networks, one based on switches, the other based on routers. The switched network basically carried voice. The packet switched network basically carried data. Now voice is about to go packet switched too. Ultimately, both networks might merge.
Christoph Engel
openaire   +3 more sources

Call Me Maybe: Using Dynamic Protocol Switching to Mitigate Denial-of-Service Attacks on VoIP Systems

open access: yesNetwork, 2022
Voice over IP is quickly becoming the industry standard voice communication service. While using an IP-based method of communication has many advantages, it also comes with a new set of challenges; voice networks are now accessible to a multitude of ...
John Kafke, Thiago Viana
doaj   +1 more source

Contracting VoIP Packet Payload Down to Zero

open access: yesCybernetics and Information Technologies, 2021
The inefficient use of the IP network bandwidth is a fundamental issue that restricts the exponential spreading of Voice over IP (VoIP). The primary reason for this is the big header size of the VoIP packet.
Abualhaj Mosleh M.   +2 more
doaj   +1 more source

Selected issues of IP telephony

open access: yesCommunications, 2004
Technologies for transporting voice over networks based on IP protocol, known under various names, e.g., Voice Over IP (VoIP), Voice on the Net (VoN), IP telephony (below IP telephony), made a great progress in the last decade.
Martin Klimo   +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

Detecting Steganography in Inactive Voice-Over-IP Frames Based on Statistic Characteristics of Fundamental Frequency

open access: yesIEEE Access, 2020
Steganography in inactive Voice-over-IP frames is a new technique of information hiding, which can achieve large steganographic capacity while maintaining excellent imperceptibility.
Hui Tian   +4 more
doaj   +1 more source

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