I don't know about the KDE dev files, but you might want to try a command line dialup tool like wvdial, which may very well be installed already. If it works, then at least you know that the problem ...
As Station Manager Cindy Gomez-Schempp records an update about Dakota Access Pipeline protest activities, her son and technical assistant, Nemo Siqueiros, quietly assists, patching together a second ...
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