ISDN (128kbps) speeds, and since text files are uncompressed it can be compressed by the modem and downloaded faster. An MP3 file would be different. Since MP3 files are already compressed, they cannot be compressed any further. Therefore, the true speed is shown. Do DSL filters affect modem performance? Yes. DSL works by sending an "out-of-band" signal on your regular phone line. 56k Modems operate in the normal voice range of Roanoke dial up, Roanoke, VA up dial RoanokeRoanoke up, dial Virginia, Roanoke dial up
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