... ... To establish connection from the client computer to the server computer you should configure the client computer to dial-up the server computer, using the following information: ISP Name: server.example.com ISP Phone: +53043515094 Username: client.example.com Password: mail4u To estabalish a dial-up connection from the client computer to the server computer, you need to determine the modem location assigned by the operating system, so you can instruct applications like system-config-network the correct device they will to talk to. This configuration process has been greatly simplified by the wvdialconf command distributed with the wvdial package. To do this, run the following command and pay attention to the three last lines of its output: wvdialconf /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. Port Scan<*1>: S1 S2 S3 WvModem<*1>: Cannot get information for serial port. ttyACM0<*1>: ATQ0 V1 E1 -- OK ttyACM0<*1>: ATQ0 V1 E1 Z -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttyACM0<*1>: Modem Identifier: ATI -- LT V.90 1.0 MT5634ZBA-USB Data/Fax Modem (Dual Config) Version 5.18e ttyACM0<*1>: Speed 4800: AT -- OK ttyACM0<*1>: Speed 9600: AT -- OK ttyACM0<*1>: Speed 19200: AT -- OK ttyACM0<*1>: Speed 38400: AT -- OK ttyACM0<*1>: Speed 57600: AT -- OK ttyACM0<*1>: Speed 115200: AT -- OK ttyACM0<*1>: Speed 230400: AT -- OK ttyACM0<*1>: Speed 460800: AT -- OK ttyACM0<*1>: Max speed is 460800; that should be safe. ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK Found an USB modem on /dev/ttyACM0. Modem configuration written to /etc/wvdial.conf. ttyACM0<Info>: Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" Now, using this information, configure a Modem connection using the interface provided by system-config-network command. Take care of replacing the /dev/modem device name by that one found by wvdialconf. At this point, you can use the button Activate from system-config-network to establish the Modem connection you just configured.