Modem troubleshooting method under Windows XP system

Computer shop news often users encounter such a problem: I have installed Windows XP, often there is no problem when the modem is not detected or the connection is established when using Modem. . What is the reason?

Such problems with Modem in Windows XP are common in conflict with another COM port.

First you can open the "Add/Remove Hardware Wizard" to determine if Windows XP recognizes the COM port. If the wizard detects a COM port conflict, the modem and physical COM port may be configured to use the same COM number. If so, then you need to set the Modem to another unused COM port, or disable the physical COM port. After resolving the COM port conflict, be sure to restart Windows and try to find out if the Modem has returned to normal.

In addition, if the "Device Manager" does not correctly identify the COM port, then you can try to manually add the port; to check the port configuration and duplicate ports, you can first open the "Setting Manager" ; Double-click "Ports (COM and LPT)" to view the list of COM ports; right-click on the port you want to configure, and then click "Properties" to confirm that the port and resource settings are correct. If you are using a duplicate COM port, right-click it and click “Uninstall”.

In addition, the wrong COM port settings may also affect the normal operation of the modem. You can check the current IRQ and input/output settings of the Modem COM port, and then compare the settings and the recommended settings in the Modem manual. Consistent. To check the COM port settings —— click on <;Device Manager", double-click “ports (COM and LPT)<;View COM port list, right click on the COM port used by Modem, display “communication In the Port Properties dialog box, click the “Resources” tab to view the current COM port settings. Unless the manual recommends other settings, we recommend that your Modem use the standard settings of the COM port shown in Table 1. If you want to use other COM port settings, you can clear the “Use automatic settings” checkbox, click “change settings" in the "value", enter the desired port settings.