Internet Protocol TV (IPTV) delivers television content to users over IP-based network. Different from the traditional TV services, IPTV platforms provide users with large amount of multimedia contents with interactive and personalized services, including the targeted advertisement, on-demand content, personal video recorder, and so on. IPTV is promising since it allows to satisfy users experie...

The ETSI Technical Committee (TC) GRID is addressing issues associated with the convergence of IT and Telecommunications, with particular reference to the lack of interoperable Grid solutions. The integration of grid technology provides new revenue streams for Telecom operators through their converged fixed, mobile and data services from their Next Generation Network (NGN) and by offering “Grid...

The next generation wireless network needs to provide seamless roaming among various access technologies in a heterogeneous environment. In allowing users to access any system at anytime and anywhere, the performance of mobilityenabled protocols is important. While Mobile IPv6 is generally used to support macro-mobility, integrating Mobile IPv6 with Session Initiation Protocol (SIP) to support ...

The paper presents and discusses a collaborative teleconsultation system built on next generation network (NGN) transmission considerations. Considering the capability of merging medical images with multimedia data and real-time video conferencing in transmission provided by NGN networks, the system is built with computer-supported cooperative work (CSCW), DICOM standard, security functions, an...

The TISPAN workgroup inside ETSI is currently working on accommodating the IMS (IP Multimedia Subsystem) architecture, which has been created for the mobile world, to the fixed scenario where there is a new important element to be taken into account: the Residential Gateway (RGW). This element is typically considered as a customer device where providers do not usually have anything to configure...

The greatest threat in the new generation network which is called NGN is unsafe authentication. Communication between new servers in NGN world is done based on Session Initiation Protocol (SIP). SIP is an application-layer control operating on top of a transport protocol which allows creating, modifying, and terminating sessions among more agents. For authentication, SIP relies on HTTP Digest b...

In a Universal Mobile Telecommunications System (UMTS), a user equipment (UE) can access IP multimedia services through IP Multimedia Subsystems (IMS). In addition to passing IMS authentication, called IMS AKA, this UE also needs to pass General Packet Radio Service (GPRS) authentication, called 3GPP AKA, since the data of the IMS service is transmitted through a GPRS network. Many steps in the...