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...

Internettelefonie beschreibt die Übertragung von Telefongesprächen, Videokonferenzen und Fax über IP-basierte Netze. Dabei werden Sprache, Bilder und Faxseiten in Echtzeit als Datenpakete statt als synchrone Bitströme zu übertragen. Diese Pakete können sowohl durch private IP-basierte Netze als auch durch das öffentliche Internet fließen. Wir unterscheiden drei Arten von Internettelefonie, je n...

The aim of this work was to design and apply a remote access by means of a mobile phone running the Java based application routine. That Java mobile phone routine communicates with the controlled and monitored system through the GPRS data transfer by means of the internet TCP/IP protocol. The data are transferred in XML format.

In this research, we propose an architectural solution to integrate the video voice over IP services in campus environment network and tested over LAN and WAN. Voice over IP technology has become a discussion issue for this time being. Today, the deployment of this technology on an organization truly can give a great financial benefit over traditional telephony. Therefore, this study is to anal...

-In this research, we propose an architectural solution to integrate the video voice over IP (V2oIP) services in campus environment network. Voice over IP (VoIP) technology has become a discussion issue for this time being. Today, the deployment of this technology on an organization truly can give a great financial benefit over traditional telephony. Therefore, this study is to analyze the V2oI...

In this research, we propose an architectural solution to integrate the video voice over IP (V2oIP) services in campus environment network and tested over LAN and WAN. Voice over IP (VoIP) technology has become a discussion issue for this time being. Today, the deployment of this technology on an organization truly can give a great financial benefit over traditional telephony. Therefore, this s...

We introduce the Broadband Phone, a Voice-over-IP (VoIP) based phone which integrates a high-resolution, touch-sensitive LCD screen. The Broadband Phone Network features: (i) a thin-client network architecture enabling easy integration into the sentient environment at the Anonymous University; (ii) location-sensing via the Active Bat indoor location system allowing applications such as the “fol...

The voice quality in Internet Protocol (IP) telephony is significantly influenced by various factors, including delay, delay variation, bandwidth congestion and the distribution of packet loss. Hence, the performance of IP telephony systems is highly dependent on understanding the contribution of these factors to the voice quality. This paper deals about a method for classifying Voice over IP (...

We describe the WebSIM, an approach that integrates GSM SIMs into the Internet. The underlying idea is to implement a Web Server inside a SIM, and to allow for transparent access to it from the Internet. The contribution of our approach is that a SIM, which is currently a security module (smart card) fitted in a GSM mobile phone, becomes also a personal security server in the Internet. Like any...