Wireless local loop systems are available to provide both broadband and narrowband services to customers. Narrowband systems are generally either based on cordless or mobile standards, or a manufacturer's proprietary technology. They are generally designed to offer voice-band services although some are capable of delivering ISDN. The broadband systems are either circuit or cell based. These systems usually operate at millimetre-wave frequencies where a line-of-sight path is required between the customer and a central base-station. Services are typically leased line, ATM and LAN interconnect.
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Merrett R P and Buttery S: ‘Cordless technology in a mobile environment’, BT Technol J, 14, No3, pp 55–63 (July 1996).
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Merrett, R.P., Beastall, P.V.E. & Buttery, S.J. Wireless Local Loop. BT Technology Journal 16, 101–111 (1998). https://doi.org/10.1023/A:1009647830404
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