WLL or WiLL stands for Wireless in Local Loop.
WLL or WiLL is meant to serve subscribers at homes or offices.
WLL is analogous with local telephone service, but much more capable.
A WLL system serves a local area by deploying a multiplicity of multichannel transmit/receive base stations (transceivers) that are within line-of-sight of the intended customers. Each customers is equipped with a mini-station of low power, into which the telephone (or PBX) is connected.
The WLL unit consists of a radio transceivers and the WLL interface assembled in one metal box. Two cables and a telephone connector are the only outlets from the box, one cable connects to a directional antenna and a phone receptacle to connect to a common telephone set. A fax or modem could also be connected for fax or computer communication.
When calls are made from the telephone, then it signals from the base station for a connection, which is subsequently established through a switch center, exactly as a conventional telephony. An incoming call is identified at the switch center and routed to the base station assigned to serve the telephone being called. the wireless connection is then made, and the call is completed in a conventional manner.
The point-to-point signal transmissions occur through the air over a terrestrial microwave platform rather than through copper or fiber cables. Therefore, fixed wireless doesn't require satellite feeds or local phone service.
The advantages of fixed wireless include the ability to connect with the users in remote areas without the need for laying new cables and the capacity for broad bandwidth that is not impeded by fiber or cable capacities.
The WLL system can operate with GSM Handsets/Mobile Units, as well as with the GSM compatible Subscriber Units. The system is transparent to the Central Office and subscribers and interfaces with the most standard Central Office Switches and subscriber telephone equipment.
Here are the list of some important advantages of WLL:
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