eserved for non-telecommunications applications until 1985 when the US Federal Communications Commission (FCC) approved their usage for telecommunications applications such as cordless telephones [2]. With increased usage of computer terminals and personal computers (PCs) in the workplace and the move to paperless offices, the mid- to late 1980s also witnessed a move towards wireless intra-office communications. The goal was to untether the office, and use wireless links to connect computers to each other and to servers and printers. However, this was not a trivial technological undertaking and research projects on short range, indoor telecommunica- tions were faced with many obstacles. One main obstacle was the lack of available frequency spectrum: while public mobile telephony operators had licensed spectrum from relevant government authorities, usage of such licensed bands within a private office was not possible. One reason was technological and business related in that mobile operators were not (yet) capable of providing service coverage within all buildings and homes. Another reason was policy related and associated with the complexity of spectrum allocation to multiple numbers of private building owners for telecommunications applications in confined spaces. A non- licensed personal communications system was therefore more suitable, and therefore the ISM band was deemed most appropriate. The release of ISM band for personal communications systems by FCC in the mid-1980s resolved many business and policy concerns [3, 4]. Accordingly, a number of standards were developed to facilitate wireless local area networking, including the now common IEEE 802.11 series. Popularity of mobile telephones in the 1990s led to the emergence of a set of new devices. Wired hands-free headsets (speaker and microphone), gave way to wireless headsets using http://transition.fcc.gov/sptf/files/E&UWGFinalReport.pdf.Used with permission of Raytheon Company. Broadband Telecommunications Technologies and Management Bluetooth technolo