| Wireless Local Loop |
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Nowdays there are various types of WLL systems. ORIGINALLY MOBILE These are available in Code Division Multiple Access (CDMA), Global System For Mobile Communications (GSM), IS136 Time Division Multiple Access (TDMA) as well as analog access technologies such as Advanced Mobile Phone System (AMPS), for which there will be independent standards defining every aspect of modulation, protocols, etc. FIXED Fixed Wireless Terminals or FWT units differ from conventional mobile terminal units operating within cellular networks -such as GSM- in that a Fixed wireless terminal or Desk Phone will be limited to an almost permanent location with almost no Roaming or '' Find-me Anywhere '' facilities. WLL and FWTs are generic terms for a radio based telecommunications technologies and the respective devices which can be implemented using a number of different Cellular systems technologies. Indeed, confusingly, some WLL providers do so use fixed GSM equipment as well as there are others that employ any of the other wireless access methods mentioned above. WLL STANDARDS
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