Edison, For reasons obscure, sometimes there is a Waiting for Carrier message despite the line NO CARRIER The Cannot get information for serial port is harmless. Please read the wvdial.txt in the SLMODEMD package about other options to try. Perhaps the first to test is adding an X3 ( don't wait for dialtone) into the line Init2: Init2 = ATQ0 V1 E1 S0=0 X3 &C1 &D2 +FCLASS=0 This compensates for low line voltages, if that doesn't help, next try: Init2 = ATQ0 V1 E1 S0=0 X3 &C1 &D2 =MS=34 which compensates for noisy lines MarvS On Tue, Jun 24, 2008 at 10:02 PM, Edison <edison@xxxxxxxxx> wrote: > I still cannot connect using wvdial. > After I add: > Carrier Check = no > > It still said Waiting for Carrier, and after that NO CARRIER shown up. > > Also there is a line 'Cannot get information for serial port' at the > beginning of the line. > Is this an error? > > Regards, > > Edison >