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Digital Media - Social Networks & UGC People naturally want to communicate, and the Internet has always provided a forum for User Generated Content, from the early bulletin boards to today...
Global - Infrastructure - Open Networks Open networks are the next step in the evolution of telecoms infrastructure as it gives users full control of the services and applications that can b...
Smart Grids and the Communications Revolution The communications revolution is an important element of the broader ICT revolution, and it is unfolding before our very eyes. We are right in the mid...
Technology - Digital Broadcasting 1 - Trends and Frequencies As a prelude to detailed discussion of the various digital broadcasting technologies, we review the propagation of radio waves, the established analog...
Technology - Infrastructure - Last Mile 1 - Twisted Pair, POTS, ISDN The twisted pair copper cables of the Plain Old Telephone Service are also used for ISDN services and for Digital Subscriber Line technologies. We des...
Technology - Infrastructure - Last Mile 4 - ADSL Principles We discuss the principles ADSL and ADSL2, including frequency allocations, modulation schemes, line splitters, modems, DSLAMs (Digital Subscriber Line...
Technology - Infrastructure - Last Mile 6 - Symmetrical SHDSL, VoDSL The symmetrical data rates of BR-ISDN, HDSL, SDSL and most importantly SHDSL G.991.2 are of special importance for business customers. We discuss thei...
Technology - Internet 6 - Applications and Protocols We discuss Telnet and FTP and their secure, encrypted replacements SSH, SCP and SFTP. We then discuss Usenet's NTTP Network News Protocol, Internet Re...
Technology - Mobile - 2 - 2G - IS-95 CDMA & GSM By the late 1990s, two 2G mobile cellular systems were dominant in areas outside North America: IS-95 and GSM. GSM became the dominant technology and ...
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