نتایج جستجو برای: voice over internet protocol
تعداد نتایج: 1512840 فیلتر نتایج به سال:
The presence of voice-over-IP traffic in the Internet is constantly increasing, as it offers improved connectivity and quality-of-service comparable to classical telephony at costs that the rival circuit-switched telephony systems cannot match. This paper evaluates the audio quality of voice-overIP calls that use the Datagram Congestion Control Protocol (DCCP), a congestion-controlled alternati...
Increasing number of Internet users forced them to use popular services, television and telephone, to use the Internet as a medium to reach their customers. Organizations are now applying VoIP and MPLS for providing the convergence of voice and data communications over single network infrastructure. VoIP (Voice over Internet Protocol) usage all over their branches, this reduces a huge amount of...
The mechanisms which enable the vast majority of computer attacks are based on design and programming errors in networked applications. The growing use of voice over IP (VOIP) phone technology makes these phone applications potential targets. We present a tool to perform security testing of VOIP applications to identify security vulnerabilities which can be exploited by an attacker. Session Ini...
The rapid growth of computing, the Internet and telecommunications systems have resulted in a broad range of ways to communicate and access information. Voice over Internet Protocol (VoIP) is a Computer Telephony Integration (CTI) solution that transports voice traffic over a data network as an alternative to the Plain Old Telephone Service (POTS). VoIP products promise converged telecommunicat...
Wireless networks and the voice over Internet protocol (VoIP) have recently been widely adapted. VoIP services over Ad-hoc network can be accomplished by middleware embedded in mobile devices. In this study, we have implemented an intelligent VoIP system with embedded pseudo session initiation protocol (SIP) server in an Ad-hoc network. We employed the standard SIP protocol and integrated SIP p...
In this paper a new way of exchanging information for Voice over Internet Protocol (VoIP) service is presented. With use of digital watermarking and steganography techniques we achieve a covert channel which can be used for different purposes e.g. to improve IP Telephony security or to alternate existing protocols like RTCP (Real-Time Control Protocol). Main advantage of this solution is that i...
Voice over Internet Protocols (VoIP) is an IP-based communication technology or commonly known as (IP). In which, IP currently widely used for mobile activities. However, the main concern in application of VoIP system ability to maintain information confidentiality while guaranteeing protection its primary users. For this reason, it requires do addition Virtual Private Network (VPN) features. C...
Internet Telephony is realized by way of instant messaging and the transmitted data are voice rather than text packets, therefore it is more difficult to identify and/or prevent Spam over Internet Telephony (SPIT) than SPAM junk e-mail. With the rising popularity of Voice over IP (VOIP), SPIT becomes a serious issue on security nowadays. This paper proposed an effective SPIT defense system, w...
Implementasi Voice Over Internet Protocol (VOIP) Berbasis Linux (Studi Kasus SMK Negeri 03 Bengkulu)
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