-p SerialNo

Plugs in a virtual serial port device with number SerialNo. SerialNo must be greater than zero. You should plug in 2 devices for creating one virtual null modem device.

-u SerialNo or 0

Unplug a virtual serial port device with number SerialNo. Please, specify 0 to unplug all devices enumerated so far.

-e SerialNo or 0

Eject a virtual serial port device with number SerialNo. Please, specify 0 to eject all the devices enumerated so far.

-i <INF_File> <Hardware_ID>

Install device driver INF_File for device Hardware_ID.

-ia

Install all Virtual Null Modem's devices drivers.

-r <Hardware_ID>

Remove device Hardware_ID.

-ra

Remove all Virtual Null Modem's devices drivers.

-s0

Don't show messages (verbose mode).

-s1

Write messages to Windows events log.

-s2

Show message box with messages (default).

-pa

This parameter plugs in all virtual serial port devices. The program reads port number from the HKEY_LOCAL_MACHINE\SOFTWARE\AGG Software\Virtual Null Modem branch from the "Ports" (REG_SZ) key. This key is created automatically by GUI application.

Key value example: 2,7,

Note: The order of parameters is very important. For examples, if you want to get silent install of drivers then you should use the following command prompt.

vnullmod -s0 -ia

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