Diagnosing and recovering from problems 10-15Solving modem problemsYour modem is designed to provide reliable and trouble-free service. However,should you experience any difficulty, the information in this section can help youdetermine and resolve the source of the problem. If you cannot resolve the problemafter reading this section, contact your IBM PC HelpCenter for assistance. See“How and when do I contact the IBM PC HelpCenter?” on page 2-5.Table 3: Modem problemsIf the problem is: Here's what to do:Modem does not respondto commands1. Make sure the modem is not configured with aconflicting COM port and IRQ setting.2. Make sure the communications software is configuredwith the correct COM and IRQ settings (same COMport and IRQ line as the modem). Yourcommunications software will not be able to send andreceive data if it does not have the correct COM andIRQ settings of the modem.3. Make sure the modem is properly initialized by thecommunications software. The modem can beimproperly initialized if you have selected an incorrectmodem type. Select "Hayes Compatible" modem typeand "Rockwell" in your data communications software.Select "Generic class 1" and "Rockwell" in your fax andvoice software, respectively. You may also be promptedby the software to enter an initialization string. UseAT&F as your initialization string.Modem dials but does notconnect1. Make sure the phone line is working properly. A noisyline will prevent proper modem operation.2. Check for busy signal, ringback, or a remote answeringsystem.Note: If any of these problems continue after taking the actions listed, see “Chapter 2.HelpWare support and services” for information on obtaining service.