Frequently asked questions

I create virtual port COM10 but it is not visible to my application.

It is the operating system issue. COM ports with numbers from 1 to 9 can be opened without any problems. To open device with number greater than 9 you need to use "\\.\" prefix.

• COM1 : valid name
• COM10 : invalid name
• \\.\COM10 : valid name
• \\.\COM1 : valid name

I create connector device to emulate modem, but modem does not work correctly.

This can be related to the modem driver. Try to use Pair device.