Wireless local loop (WLL) goes by a variety of names, including Fixed-Radio Access (FRA), Radio in the Loop (RITL),
or fixed-wireless access (FWA). By any name, it describes a technique where wireless communications are used as
the final "last mile" link between the person holding the telephone (or sitting at the
computer terminal) and the start of the telephone pole or other wired service. There are a number of technologies
that can be used to provide this link, including CDMA, TDMA, GSM, UMTS 3G, 4G, PHS, PAS, DECT, and LMDS to name a few.
For more information and tutorials on this concept, see one of the links below.