There are multiple ways to complete a data transmission. The most popular involves the use of twisted copper pairs and the Internet. This uses analog data transmission. and problems can occur, caused by magnetic interfaces, connection errors and many other things. The newest technology involves the use of optics, with interoffice fiber trunks that transmit digital codes. This assures a really low error rate; however, considering that this technology is still quite expensive, it will probably be a long time before we switch to this all over the world. Then again, there is the wireless data co...
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