terial Return On Investment Received Signal Strength Indication Request To Send SC-FDMA Single-Carrier Frequency Division Multiple Access Synchronous Digital Hierarchy SHDSL Single Pair HDSL Silicon Germanium Subscriber Identity Module Single Input Multiple Output Session Initiation Protocol SONET Synchronous Optical Network STiMI Satellite And Terrestrial Interactive Multi Service Infrastructure See What I See Time-Division Duplexed TDM PON Time Division Multiplexed Passive Optical Network Tetraenhanced Data Service Isotropic Sensitivity Total Radiated Power TSPEC Traffic Specification Unacknowledged Datagram Protocol Universal Subscriber Identity Module Voltage-Controlled Oscillator Video Graphics Array Video Object Groupings Video Object Layers Video Object Planes Video Object Sequence Wavelength Division Multiplexing Wireline Equivalent Privacy WiFi Protected Access Acknowledgements Having coauthored three previous technical books on telecom related topics, The Mobile Radio Servicing Handbook in 1989, Data Over Radio in 1992 and 3G Handset and Network Design in 20031 it occurred to me that it might be useful to write a fourth book documenting the changes that have occurred in the past eight years and the related implications for the industry looking forward. It then occurred to me that this was a massive amount of work for a minimal return and the idea was shelved until this week end when I read an interview² in the Guardian Week End Review section on Michael Moorcock, a prolific author of Science Fiction. On a good day Mr Moorcock can apparently produce 15 000 words of breathless prose and once authored a complete book in three days. On the basis that as each year passes telecoms seems to more closely resemble science fiction I decided I should not be a wimp and get down to writing. A few phone calls to some of my previous coauthors established that they were less than enthusiastic at joining me again in a technical publishing venture and asked why didn't I do this one on my own. So at this point I would lik