Okay, I Trying Your Instruction and Following the rule Here the result of it: ----------------------------------------------------------------|-------------------------| hasan@edubuntu:~$ sudo slmodemd -c USA /dev/modem | Password: | SmartLink Soft Modem: version 2.9.9e-pre1 May 28 2006 17:44:44 | symbolic link `/dev/ttySL0' -> `/dev/pts/3' created. | modem `modem' created. TTY is `/dev/pts/3' | Use `/dev/ttySL0' as modem device, Ctrl+C for termination. | ----------------------------------------------------------------|-------------------------| In a new terminal: --------------- hasan@edubuntu:~$ sudo wvdialconf Password: Editing `/etc/wvdial.conf'. Scanning your serial ports for a modem. ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS3<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS3<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS3<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. WvModem<*1>: Cannot get information for serial port. ttySL0<*1>: ATQ0 V1 E1 -- OK ttySL0<*1>: ATQ0 V1 E1 Z -- OK ttySL0<*1>: ATQ0 V1 E1 S0=0 -- OK ttySL0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttySL0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttySL0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttySL0<*1>: Modem Identifier: ATI -- SmartLink Soft Modem ttySL0<*1>: Speed 4800: AT -- OK ttySL0<*1>: Speed 9600: AT -- OK ttySL0<*1>: Speed 19200: AT -- OK ttySL0<*1>: Speed 38400: AT -- OK ttySL0<*1>: Speed 57600: AT -- OK ttySL0<*1>: Speed 115200: AT -- OK ttySL0<*1>: Speed 230400: AT -- OK ttySL0<*1>: Speed 460800: AT -- OK ttySL0<*1>: Max speed is 460800; that should be safe. ttySL0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK Found a modem on /dev/ttySL0. Modem configuration written to /etc/wvdial.conf. ttySL0<Info>: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" hasan@edubuntu:~$ soudo wvdial bash: soudo: command not found hasan@edubuntu:~$ sudo wvdial --> WvDial: Internet dialer version 1.56 --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Modem initialized. --> Sending: ATDT0219718733 --> Waiting for carrier. ATDT0219718733 NO CARRIER ERROR --> No Carrier! Trying again. --> Sending: ATDT0219718733 --> Waiting for carrier. ATDT0219718733 NO CARRIER [1]+ Stopped sudo wvdial --------------------------------------------------------- For second tray ------------------- hasan@edubuntu:~$ sudo wvdial --> WvDial: Internet dialer version 1.56 --> Cannot open /dev/ttySL0: Device or resource busy --> Cannot open /dev/ttySL0: Device or resource busy --> Cannot open /dev/ttySL0: Device or resource busy ------------------------------------------------------------- For TERTIARY: ------------------------------------------------------------------------------------------| hasan@edubuntu:~$ sudo slmodemd -c USA /dev/ttyS0 | SmartLink Soft Modem: version 2.9.9e-pre1 May 28 2006 17:44:44 | symbolic link `/dev/ttySL64' -> `/dev/pts/4' created. | modem `ttyS0' created. TTY is `/dev/pts/4' | Use `/dev/ttySL64' as modem device, Ctrl+C for termination. | [1]+ Stopped sudo slmodemd -c USA /dev/ttyS0 | hasan@edubuntu:~$ | ------------------------------------------------------------------------------------------| And in a new terminal: ------------------------------------------------- hasan@edubuntu:~$ sudo wvdialconf Editing `/etc/wvdial.conf'. Scanning your serial ports for a modem. ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS1<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS1<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS1<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttyS3<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS3<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS3<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. ttySL0<Info>: Device or resource busy Modem Port Scan<*1>: SL0 WvModem<*1>: Cannot get information for serial port. ttySL64<*1>: ATQ0 V1 E1 -- OK ttySL64<*1>: ATQ0 V1 E1 Z -- OK ttySL64<*1>: ATQ0 V1 E1 S0=0 -- OK ttySL64<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttySL64<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttySL64<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttySL64<*1>: Modem Identifier: ATI -- SmartLink Soft Modem ttySL64<*1>: Speed 4800: AT -- OK ttySL64<*1>: Speed 9600: AT -- OK ttySL64<*1>: Speed 19200: AT -- OK ttySL64<*1>: Speed 38400: AT -- OK ttySL64<*1>: Speed 57600: AT -- OK ttySL64<*1>: Speed 115200: AT -- OK ttySL64<*1>: Speed 230400: AT -- OK ttySL64<*1>: Speed 460800: AT -- OK ttySL64<*1>: Max speed is 460800; that should be safe. ttySL64<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK Found a modem on /dev/ttySL64. Modem configuration written to /etc/wvdial.conf. ttySL64<Info>: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" hasan@edubuntu:~$ sudo wvdial --> WvDial: Internet dialer version 1.56 --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Modem initialized. --> Sending: ATDT0219718733 --> Waiting for carrier. ATDT0219718733 NO CARRIER ERROR --> No Carrier! Trying again. --> Sending: ATDT0219718733 --> Waiting for carrier. ATDT0219718733 NO CARRIER ERROR [2]+ Stopped sudo wvdial hasan@edubuntu:~$ -------------------------------------------------- Help me please