Hi all, PPP hasn't been tested recently here and I need a little bit time to set it up. I think http://www.ethernut.de/en/nuttecnotes/ntn-1_ppp.html is wrong as it suggests NutRegisterDevice(&devUart0, 0, 0); instead of NutRegisterDevice(&devAhdlc0, 0, 0); Please stay tuned. Harald