Results 1 to 10 of about 281,121 (333)

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   +6 more sources

Assessment of voice over IP as a solution for voice over ADSL [PDF]

open access: greenGlobal Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2003
The paper compares VoATM and VoIP in terms of their suitability for carrying voice traffic over DSL. ATM is currently the preferred protocol due to its built-in QoS mechanisms. Through simulations, we show that IP QoS mechanisms can also be used to achieve comparable performance for voice traffic over DSL.
Abhishek Ram   +2 more
openalex   +4 more sources

Voice over IP [PDF]

open access: yesIEEE Potentials, 2001
The authors begin by discussing the components of voice over IP (VoIP). They go on to consider SS7, H.323, SIP (session initiation protocol), voice coders, ITU-T specifications, RTP (real time transport protocol), gateway control, wireless networks, quality of service, packet loss, jitter, latency and bit rate.
S. Udani, P. Mehta
core   +6 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

Challenges for Mobile Voice-over-IP [PDF]

open access: bronze, 2000
The use of IP to transport voice is receiving significant attention in the telecommunications and data networking industries. Commonly known as Voice-over-IP (VoIP), this technology has the potential to allow user communication involving multiple media types, and between terminals that offer improved capabilities and user interfaces.
Prathima Agrawal   +2 more
openalex   +3 more sources

A secure archive for Voice-over-IP conversations

open access: green, 2006
9 pages, 2 figures. (C) ACM, (2006). This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution.
Christian Hett   +2 more
openalex   +4 more sources

A Survey on Voice over IP over Wireless LANs [PDF]

open access: green, 2010
{"references": ["J.B. Meisel, M. Needles, Voice over Internet protocol (VoIP)\ndevelopment and public policy implications, Info 7, 2005.", "M. ALAkhras, \"Quality of Media Traffic over Lossy Internet Protocol\nNetworks: Measurement and Improvement\", Software Technology\nResearch Laboratory, De Montfort University, United Kingdom, PhD\nthesis, 2007 ...
Haniyeh Kazemitabar   +4 more
openalex   +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

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

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