This paper presents the status of the NESPOLE! data collection as of end of February, 2001. A multilingual VoIP (Voice over Internet Protocol networks) database consisting of 200 dialogues in 4 languages (English, German, Italian and French) was recorded and transcribed. Dialogue speakers were connected via a H323 video-conferencing terminal. We describe the task, the technical architecture, th...

Technology makes it easier for us to communicate over a distance. However, there are still many remote areas that find difficult communicate. This is due the fact communication infrastructure in some expensive build while profit will be low. paper proposes combine voice internet protocol (VoIP) mesh network implemented on openWRT router. The routers performing functions. We set up VoIP server r...

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...

........................................................................................................... 4 Document Conventions................................................................................... 4 Introduction.................................................................................................... 5 Overview of VoIP techniques..........................................

Due to the ongoing massive growth of the global Internet, the rising integration of Voice over IP (VoIP) services and the Fixed Mobile Convergence (FMC), the IPv6 protocol and the Session Initiation Protocol (SIP) are key technologies for the realization of next generation communications. For both topics, IPv6 and SIP, a lot of self-contained research has been done. However, the challenge of SI...

Present day, the internet telephony growth is much faster than previous. Now we are familiar with digitized packet of voice stream. So, we have required VOIP communication. SIP is one type of VOIP protocol. This one has a SIP proxy. There have one of the important communication environment Wireless LAN (WLAN). WLAN have different radio link standard. Here I am comparing SIP protocol in two radi...

Many protocols running over the Internet are neither formalised, nor formally analysed. The amount of documentation for telecommunication protocols used in real-life applications is huge, while the available analysis methods and tools require precise and clear-cut protocol clauses. A manual formalisation of the Session Initiation Protocol (SIP) used in Voice over IP (VoIP) applications is not f...

Voice over Internet Protocol (VoIP) is a general term for a family of transmission technologies to delivery of voice communications over IP networks such as the Internet or other packet-switched networks. VoIP systems employ session control protocols to control the set-up and tear-down of calls as well as audio codecs which encode speech allowing transmission over an IP network as digital audio...

This paper considers three applicationsVoIP, mobile Web access and mobile server-based data transfersand evaluates the applicability of various IP-based mobility management mechanisms. We first survey the features and characteristics of various IP mobility protocols, such as MIPv4, MIPv6, MIP-RO, SIP, CIP, HAWAII, MIP-RR and IDMP, and then evaluate their utility on an application-specific basis...

The Session Initiation Protocol (SIP) is a general protocol for session setup and management, e.g., for VoIP. Current SIP networks build on a fixed infrastructure that relies on static network entities. General problems with this infrastructure, e.g., in ubiquitous ad-hoc networks, lead to a trend of integrating peer-to-peer mechanisms into SIP. We propose a generic architecture for decentralis...