My dialer don't have string +MS=92, but it's OK to try add +MS=92 (What this means?) If this is because low quality of phone line why using Windows this problem didn't appeare? $ sudo gedit /etc/wvdial.conf [Dialer Defaults] Modem = /dev/ttySL0 Init1 = ATZ Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Modem Type = Analog Modem Carrier Check = no New PPPD = yes ISDN = 0 Phone = 080989999 Username = telkomnet@instan Password = telkom Baud = 460800 -----Original Message----- From: Marvin Stodolsky [mailto:marvin.stodolsky@xxxxxxxxx] Sent: Wednesday, October 24, 2007 7:52 AM To: Robikhun (robihun) Subject: Re: slmodemd NO CARRIER error Robikhun, Since the dialout worked last week and is not reproduceable, it is likely a phone line quality problem. Read the wvdial.txt Try adding to the end of the Init2 = line , the +MS=90 as substittute for a default +MS=92 If this does not improve the situation. try instead +MS=34 MarvS