1. Make sure that the modem is installed and the phone line is running to the modem correctly.
   
   
2. Is the dialer pointing to the correct modem?
   
   
3. Make sure that no other programs are using your modem. Fax software, Supervoice, etc...
   
   
4. Ctrl-Alt-Delete, if you see RNAAPP loaded, then double click it to close it.
   
   
5. Try uninstalling and reinstalling the modem. Make sure that they can hear a dialtone through the modem (with a handset). Could be a modem problem. If they don't hear a dialtone it could also be a line, jack, or general telco problem.
   
   

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