Redes de próxima generación (original) (raw)
The history of networks and services were born with the creation of the Integrated Services Digital Network (ISDN), ISDN however not meet the current needs in the network since it incorporates the technology and Internet services and IP. With the emergence of the switched telephone network (PSTN) solves this problem but there is a new trend, migrating these networks (PSTN and ISDN) to Next Generation Networks (NGN). This idea arises to meet the challenge of supporting traditional services like Internet access, voice calls, messaging, SMS and new services, including IP protocol television (IPTV) and multimedia calls in a common network, not different networks involved. This paper presents the results that were obtained descriptively during the study, from the most important aspects of these next generation networks covering the major concepts used for treatment. Its functional architecture, quality of service that promises to deliver and its evolution from PSTN networks are also topics briefly discussed in this paper. Keywords: NGN architecture, NGN evolution, next generation networks, NGN Services, wireless networks.
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