Voice over IP (VoIP) is rapidly changing the way we use the telephone for voice communications. The term "Voice over IP" defines the transport of VoIP‐based networks, including the signaling and streaming protocols as well as describing the codecs. VoIP is widely used by all kinds of consumers ranging from computer enthusiasts who are excited to get free long‐distance calls over the Internet to...

The introduction of VoIP telephony raises concerns about current regulatory practice. Access regulation has been designed for PSTN and the liberalization of the PSTN market. This paper explores the effects of access regulation of PSTN networks on consumers’ adoption of a new technology in the form of VoIP. It also discusses the link between access regulation and the incentives to invest in VoIP...

This paper presents technology for monitoring and assessment of network QoS parameter for Voice over IP (VoIP) applications in inter-domain environment. The technology is based on automated analysis and description of structures (patterns) of QoS parameter behaviour impacting the VoIP quality: “Quality impairment” patterns, i.e. “outliers” of network delay and packet loss, which predict degrada...

VoIP applications are emerging today as an important component in business and communication industry. In this paper, we address the intrusion detection and prevention in VoIP networks and describe how a conceptual solution based on the Bayes inference approach can be used to reinforce the existent security mechanisms. Our approach is based on network monitoring and analyzing of the VoIP-specif...

VoIP is a relatively new technology. Current research suggests that firms are using VoIP technology to cut costs, to improve productivity, and the firm’s strategic position. The literature is rich with “how to” articles and a discussion of possible benefits, costs, and implementation barriers. But, very few academic studies exist. The purpose of this study is to identify and present the issues ...

Monitoring call quality in a Voice over IP (VoIP) environment has great importance to collect information about those calls on the network. Packet loss on the network and de-jitter buffer, delay and subjective speech evaluation using the E-Model will enable the manager to verify the quality of calls. This article proposes the development of an agent to implement objects with statistical data ab...

The Internet has burgeoned into a worldwide information infrastructure during the past few years, bringing about significant changes in the telecommunications arena. One of the new applications that has thrived is Voice over IP (VoIP), also known as Internet or IP telephony. Since its inception, huge strides have been made in quality and usability and now VoIP enjoys widespread popularity as an...

This research paper has analyzed the mobile VoIP technology from the business point of view, focusing mostly on the consumer sector. Through the identification of relevant technologies in implementing mobile VoIP services the paper has constructed a classification of major players in the business. First, there are incumbent operators, who might leverage on the combination of cellular and emergi...

Lost audio packet steganography (LACK) is a steganography technique established on the VoIP network. LACK provides a high-capacity covert channel over VoIP network by artificially delaying and dropping a number of packets in use to convey stegnogram. However, the increasing loss of packets will hurt the quality of the VoIP service. The quality deterioration will not only affect the legitimate V...

The Internet has burgeoned into a worldwide information superhighway during the past few years, giving rise to a host of new applications and services. Among them, Voice over IP (VoIP) is the most prominent one. Beginning more as a frolic among computer enthusiasts, VoIP has set off a feeding frenzy in both the industrial and scientific communities and has the potential to radically change tele...