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Wireless Local LoopWireless local loop (WLL), also called radio in the loop (RITL) or fixed-radio access (FRA), is the use of wireless connection as the last mile for delivering plain old telephone service (POTS) to customers. It differs from Global System for Mobile Communications (GSM) in that it does not offer roaming or find-me anywhere facilities. Also GSM is a standard defining every aspect of modulation, protocols, etc. WLL is a generic term for a method of connection which can be implemented using a number of different technologies. Indeed, confusingly, some WLL providers do so using GSM equipment. Some of the more popular WLL systems include corDECT in India, and xiaolingtong/PAS in China. See also - PCS
- Japan's PHS or personal handyphone system
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