This document defines a Session Initiation Protocol (SIP) event package that enables the collection and reporting of metrics that measure the quality for Voice over Internet Protocol (VoIP) sessions. Voice call quality information derived from RTP Control Protocol Extended Reports (RTCP-XR) and call information from SIP is conveyed from a User Agent (UA) in a session, known as a reporter, to a ...

. Voice over Internet Protocol is an upcoming technology. VoIP enables voice communication through the Internet. Internet provides lot of services to the people. VoIP differs from conventional networks. The online transmission of audio data over networks faces lot of problems. Real time voice transmission is not as easy as ordinary text data. Networks are not designed to support real time commu...

This document defines a Session Initiation Protocol (SIP) event package that enables the collection and reporting of metrics that measure the quality for Voice over Internet Protocol (VoIP) sessions. Voice call quality information derived from RTP Control Protocol Extended Reports (RTCP-XR) and call information from SIP is conveyed from a User Agent (UA) in a session, known as a reporter, to a ...

As the telegram was replaced by telephony, so to Voice over IP (VoIP) systems are replacing conventional switched wire telephone devices, these systems rely on Internet connectivity for the transmission of voice conversations. This paper is an outline of ongoing preliminary research into malfeasant VoIP activity on the Internet. 30 years ago PABX systems were compromised by hackers wanting to m...

INTRODUCTION Voice over Internet Protocol (VoIP) is the enabling technology for this service integration. In short, 64Kbps voice is converted into data packets and transferred over the data backbone. The savings of voice and data over a single corporate network can be considerable and the technology exists. But where does a company begin? This article reviews the enabling technologies and prese...

VoIP over Mobile WiMAX provides high data rate voice connectivity to high speed mobile as well as to fixed users. Voice over Internet Protocol (VoIP) enables the transport of voice data over internet protocol base networks. The WiMAX mobile network provides data services to both mobile as well as pedestrian users and the quality of voice is greatly affected with the mobility patterns of mobile ...

-Voice over Internet Protocol (VoIP) is one of the fastest growing applications over Internet. The quality of service of VoIP can be measured by ITU E-model which is a subjective measure. In this paper, we discuss a novel method using Artificial Neural Network (ANN) to predict quality on real time traffic. It overcomes the drawback of available methods. NN has learning capability, so it can ada...

The popularity of Voice over the Internet Protocol (VoIP) for providing voice communication over IP networks such as the Internet has resulted in VoIP becoming a global telephony service. VoIP applications convert analogue voice signals into a digital format, which is then encapsulated into IP packets for transmission over the Internet. Our research has examined both the security and privacy im...

Voice over IP (VoIP) service has been widely deployed over the prevalent Internet due to the advanced technologies of digital voice compression, communication protocols, and wired/wireless networks. VoIP then benefitmuch lower cost of equipment, operation, and better integrationwith data applications than voice communications over telephony networks. On the other hand, VoIP further introduce se...