Tentando obter um modem USB para rodar com o wvdial

Question

  $ 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.
    Modem Port Scan<*1>: S1   S2   S3   

Sorry, no modem was detected!  Is it in use by another program?
Did you configure it properly with setserial?

Please read the FAQ at http://alumnit.ca/wiki/?WvDial

O link compartilhado não funciona, alguma idéia?