Abstract:The local network has evolved for the conveyance of speech-band signals in an efficient manner. Fortuitously, this network can also carry higher frequency signals, although with some restrictions. The advent of modern semiconductor technology has allowed engineers to exploit these higher frequencies to provide additional services.Initially these additional services were generally restricted to analogue pair-gain and alarm systems but, with the birth of the information technology age, the capability of the loca… Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.