c# qr code generator code project After this lesson, you will be able to in Visual C#.NET

Generate QR Code in Visual C#.NET After this lesson, you will be able to

After this lesson, you will be able to
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Configure a modem in Windows XP Professional. Create a dial-up connection. Configure Windows XP Professional to allow incoming connections.
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Estimated lesson time: 30 minutes
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Configuring Modems
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The most common dial-up connection uses a standard analog telephone line and a modem. Standard analog phone lines are available worldwide and meet most requirements of a mobile user. Standard analog phone lines are also referred to as a Public Switched Telephone Network (PSTN) or Plain Old Telephone Service (POTS). Windows automatically detects and installs most modern modems that are Plug and Play compliant. For the most part, users can create a dial-up connection that uses a modem without ever having to configure the modem itself. There are times, however, when you might need to configure or troubleshoot a modem. You will do so by using the Modems tab of the Phone And Modem Options dialog box, shown in Figure 15-8. To open this dialog box, use the following steps: 1. Click Start, and then click Control Panel. 2. In the Control Panel window, click Printers And Other Hardware. 3. In the Printers And Other Hardware window, click Phone And Modem Options. If prompted, provide your location information. 4. Click the Modems tab. The Modems tab shows a list of modems installed on the computer. Select a modem, and then click Properties to open the Properties dialog box for the modem, shown in Figure 15-9. This is the same Properties dialog box that you see when you open the properties for a modem in Device Manager.
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15
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Configuring Network and Internet Connections
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Figure 15-8 modems.
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The Modems tab of the Phone And Modem Options dialog box shows installed
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Figure 15-9 Use the Properties dialog box for a modem to configure and troubleshoot the modem.
The Properties dialog box for a modem always contains the following tabs (though you may see additional tabs depending on the type of modem you have installed):
General The General tab shows basic information about the modem, whether Windows reports the modem as working or not, and whether the modem is enabled. Modem The Modem tab lets you control the speaker volume for the modem or turn the sound off. Many users prefer not to hear the modem each time it dials, although some users rely on hearing that sound to feel sure that their modem is working properly. The Modem tab also lets you control the maximum port speed for the modem, although because Windows negotiates the speed of the port you should not need to alter the default setting. The final option on the Modem tab lets
Lesson 2
Configuring Dial-Up Connections 15-21
you specify whether Windows should wait for a dial tone before dialing numbers. Users in some locations might find that their modem does not recognize the dial tone used in that area, or users might need to dial the phone manually.
Diagnostics The Diagnostics tab lets you issue a query to the modem to determine whether it is receiving and sending commands properly. Click Query Modem and wait a few moments to see the result. This command is the single most useful modem troubleshooting tool in Windows because it helps you determine whether a modem is working properly. If the query returns an error stating that it cannot communicate with the modem, you know you must troubleshoot the modem itself. If the query returns results, you know the modem is working and the problem lies elsewhere most likely in the dial-up connection configuration or in the application trying to make the connection. The Diagnostics tab also lets you enable logging for the modem. Advanced The Advanced tab lets you configure initialization commands for the modem commands that control how the modem sends and receives data. Mostly, you do not need to worry about using extra initialization commands because the most common uses for these commands (such as waiting for a dial tone, dialing 9 to get an outside line, or using a code to disable call waiting) are all configurable options within Windows. Driver The Driver tab displays version information about the modem driver; and provides tools for updating, rolling back, and uninstalling drivers. For more information about using the options on this tab, see 6.
Note Many modems are compatible with Windows XP However, many difficult-to-detect prob. lems are the result of older, incompatible modems. Plug and Play modems are cheap enough these days that it is usually easier and more cost-effective to replace an old modem than troubleshoot it. To find hardware that is supported by Windows operating systems, visit the Windows Catalog on the Microsoft Web site.
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