for voice communications only. To reduce the bandwidth required for a voice call, engineers limited the frequencies from 0 to 4000Hz allowing more simultaneous calls (The range of the normal human voice is 300 to 3500Hz.) Unfortunately, this bandwidth range has a detrimental effect on data communications. Multiple PPP Also known as "shotgun". This means you connect two modems, to two phone lines, and dial-in to your ISP for double the Providence dial up connection, Providence, NC up connection dial ProvidenceProvidence up connection, dial North Carolina, Providence dial up connection
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