Change port |
Applies To: Windows Server 2008,Windows Vista
Lists or changes the COM port mappings to be compatible with MS-DOS applications.
For examples of how to use this command, see Examples.
Syntax
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change port [<PortX>=<PortY> | /d <PortX> | /query] |
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Parameters
Parameter |
Description |
<PortX>=<PortY> |
Maps COM <PortX> to <PortY>. |
/d <PortX> |
Deletes the mapping for COM <PortX>. |
/query |
Displays the current port mappings. |
/? |
Displays help at the command prompt. |
Remarks
- Most MS-DOS applications support only COM1 through COM4 serial ports. The change port command maps a serial port to a different port number, allowing applications that do not support high-numbered COM ports to access the serial port. Remapping works only for the current session and is not retained if you log off from a session and then log on again.
- Use change port without any parameters to display the available COM ports and their current mappings.
Examples
- To map COM12 to COM1 for use by an MS-DOS-based application, type:
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change port com12=com1 |
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- To display the current port mappings, type:
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change port /query |
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Additional references
Terminal Services Command Reference