The deployment of Next-Generation Networks (NGN) is a challenge that requires integrating heterogeneous services into a global system of All-IP telecommunications. These networks carry voice, data, and multimedia traffic over the Internet, providing users with the information they want in any format, amount, device, place or moment. Still, there are certain issues, such as the emerging security...

Instant messengers (IMs) have become a very popular and convenient tool for communication. Having started with simple presence protocols, IMs now support exchange of text, sound, video, even game playing. Tons of information are being daily exchanged through IMs. Still, it seems that IMs favor functionality over security. Most popular IMs (MSN, Yahoo! messenger, ICQ etc...) send data as plainte...

The authors have studied the security management architecture for Personal Networks (PN). The main feature of the proposed architecture is to exploit a trusted cellular system, namely, an IMS (IP Multimedia Subsystem), to provide security functions for PNs over open networks like the Internet. They also proposed two security functions to solve security issues for a PN, PE ID and Key Assignment ...

Over the last years, developments in telecommunication technologies, bringing possibilities for rich-context communications with multimedia content, has satisfied most of users' demands about always on, rich-content communication ways with high degree of versatility (conferencing, application interactivity). On commercial level, all these new features have been integrated within the 3G UMTS, a ...

Over the latest few years, most of the major telephony and services providers have got their attention on the LTE/SAE solution, in the attempt of getting the most bandwidth and features at the least implementation and operating price. One of the major challenges that 3GPP, the creator of LTE/SAE architecture, has faced is the IMS integration with SAE. The latest standard version available at th...

This article presents a comparison of main characteristics of the Next Generation Networks (NGN) and Future Generation Internet (FGI). The aim is to discuss and compare two approaches to Future Networks (FN) and services: the evolution of NGN, and the revolutionary approach of a new FGI. We present both frameworks from the services point of view as they are delivered to the end-user, as well as...

Introduction: Detection of Cryptosporidium and Giardia parasites in water samples is usually performed by US Environmental Protection Agency 1623 method. Nevertheless, the USEPA1623 method still need improvement, to prevent and control the water borne parasitic disease. Therefore, we undertook the present study. Materials and methods: Totally 48 surface water samples were collected. Four sampl...