Keywords: Atb10 16800.PNG A spectrum of signal of V34 standard modem on a telephon line at speed of 16800 bit/s http //www merynet x pl/gajdzi/widma/ gajdzi gajdzi written premission in Polish you can find here http //pl wikipedia org/w/index php title V 23 oldid 12150752 Modem spectrums |