Sony PCG-NV170 - Manual (Page 169)

Troubleshooting the Modem
My modem does not work.
 Make sure the telephone cable is plugged into the cable jack. See Connecting a Telephone Cable for more
information.
 Make sure the telephone cable is working by plugging the cable into an ordinary telephone and listening for a dial
tone.
 Make sure the telephone number the program is dialing is correct.
 Make sure the software you are using is compatible with the computer's modem. (All preinstalled Sony programs are
compatible.)
 If you are still experiencing problems, use the supplied Application Recovery CD(s) to reinstall the modem drivers.
See
To use the Application Recovery CD(s) for more information.
Page 169