> I attach the log for the 2 following case : > - Simcom SIM300 : mux establish fine, pppd launch and the link establish (I > interrupted the process), a serial terminal can talk to the modem and get answer, > - Telit UC864E : mux establish fine, pppd blocks after sending AT, a serial > terminal can talk to the modem and get answer so I don't understand why chat > fails, First guess would be to try fiddling the flow control, could be the modem for some reason thinks it is currently flow controlled ? Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html