This is due to the compression on your modem. Whether or not compression is used depends on the type of file. For example, if your were to download a text file, then you could see up to 14KB/s which is nearly 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
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