Dialing Properties settings not noted here are otherwise not relevant for local dial-in to UIC, but if you have additional configurations such as for a calling card number, make sure they are correctly typed. The Number to be dialed is displayed at the bottom of the window, exactly as the modem will dial it. Click OK . If increasing the S7 register does not help, the server may be down or extremely busy. Try connecting again later.
Evening hours can be especially busy during mid-terms and the last couple weeks of a semester.
You may have better luck connecting if you dial a different dialin line or the express line. There is no dial tone. Make sure your modem is connected to the phone line properly. This has to do with phone line usage and for the most part, the reasons are obvious - the same as for a telephone. Click on the Dial Properties button.