Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
Source: Microsoft Support
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You use dialer.exe to dial a voice phone call.
You can hear the recipient of the phone call, but they cannot hear you.
Dialer.exe is a program that ships as part of Windows Vista. It allows users to dial calls via their computer. However, for voice calls, a separate program is required to handle the voice portion of the call, and the modem being used to dial the call must support both voice and data communication.
When making a voice call, once the phone number has been dialed, the user should use a separate program to handle the voice portion of the call.
If the user simply wants to use dialer.exe to dial their phone line, they must enter a number to dial in dialer.exe, dial the number, then pick up a handset that is connected to the same phone line as the modem to speak with the recipient of the call.
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