line is out of spec in some way. 16.8Kbps (ITU-T V.34 protocol) This is the minimum speed that most V.34 modems will actually be able to connect at on a minimally specified line. That means if the modem _can_ get this speed, the line *must* be within specs. This is also the upper limit for connections through various types of digital carrier systems that use ADPCM or 32K bits per channel