Results 21 to 30 of about 288,912 (293)
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
Multicast broadcast services support in OFDMA-based WiMAX systems [Advances in mobile multimedia] [PDF]
, 2007 Multimedia stream service provided by broadband wireless networks has emerged as an important technology and has attracted much attention. An all-IP network architecture with reliable high-throughput air interface makes orthogonal frequency division ...
Chen, HH, Jiang, T, Ni, Q, Xiang, W
core +1 more source
MOBILTEL - Mobile Multimodal Telecommunications dialogue system based on VoIP telephony [PDF]
Journal of Electrical and Electronics Engineering, 2009 In this paper the project MobilTel ispresented. The communication itself is becoming amultimodal interactive process. The MobilTel projectprovides research and development activities inmultimodal interfaces area.
Anton Čižmár +4 more
doaj
Closed-Circuit Unobservable Voice over IP [PDF]
Twenty-Third Annual Computer Security Applications Conference (ACSAC 2007), 2007 Among all the security issues in Voice over IP (VoIP) communications, one of the most difficult to achieve is traffic analysis resistance. Indeed, classical approaches provide a reasonable degree of security but induce large round-trip times that are incompatible with VoIP. In this paper, we describe some of the privacy and security issues derived from
Aguilar Melchor, Carlos +2 more
openaire +2 more sources
LTE enhancements for Public Safety and Security communications to support Group Multimedia Communications [PDF]
, 2015 Currently Public Safety and Security communication systems rely on reliable and secure Professional Mobile Radio (PMR) Networks that are mainly devoted to provide voice services.
Carlà, Lorenzo +4 more
core +2 more sources
An Enhanced Steganographic Code and its Application in Voice-Over-IP Steganography
IEEE 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 +1 more source
HIGH QUALITY LOW BITRATE VOICE CODEC FOR TRANSMISSION OVER ADVANCED LTE
Iraqi Journal of Information & Communication Technology, 2021 In mobile communication systems bit-rate reductions while maintaining an acceptable voice quality are necessary to achieve efficiency in channel bandwidth utilization and users satisfaction.
Noor N. Edan, Nasser N. Khamiss
doaj +1 more source
, 2020 The implications of ambimorphic archetypes have been far-reaching and pervasive. After years of natural research into consistent hashing, we argue the simulation of public-private key pairs, which embodies the confirmed principles of theory. Such a hypothesis might seem perverse but is derived from known results.
Anggi Cecilia Safaningrum +2 more
openaire +2 more sources
Signalling in voice over IP Networks [PDF]
, 2001 Voice signalling protocols have evolved, keeping with the prevalent move from circuit to packet switched networks. Standardization bodies have provided solutions for carrying voice traffic over packet networks while the main manufacturers are already ...
Larrabeiti López, David +2 more
core +2 more sources
Arthritis Care &Research, EarlyView.People with systemic autoimmune and rheumatic diseases (SARDs) are at higher risk than the general population of experiencing adverse pregnancy and perinatal outcomes such as preeclampsia, intrauterine growth restriction, and maternal and/or fetal death.
Mehret Birru Talabi, Sonya Borrero
wiley +1 more source