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› See More: O interior do telefone?
- 12-29-2011, 01:49 PM #2Phone Expert
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Re: O interior do telefone?
A mobile phone is also called a cellphone because the phone network is made up of base stations that send out signals, and the area covered by each of these base stations is called a cell. Cells overlap to make up a coverage area. The mobile handset uses radio to communicate with the nearest cell site. When a handset gets too far from a cell site, a computer lets the phone know and a cell site closer to the phone takes over the call on a different channel. The phone can transmit and receive on hundreds of different channels.
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