Why I am able to write anything in the Port Name Input Box instead of just having predefined Port Names (eg: COM1,COM2,COM3,COM4…)?
COM1, COM2, COM3, COM4… are not the only names that could appear here. We are supporting up to 128 modems at the same time, so the real situation is that we will have up to 4 Digiboard or Equinox multiple serial I/O boards in our server (with 4/8/16/32 ports each). On Digiboard COM/Xi board serial port name can be (and often is) user defined (Serial1, Serial2, cu01, cu02, /dev/tty1A, /dev/tty2A, digi3C, digi3D, … etc.) instead of COM1, COM2. This is done by administrators to ease the maintenance. It’s much easier for administrator to find the modem on port /dev/tty2C (or digi2C) because this name is used as a shortcut and means: ‘Third(C) serial port on the Second Digiboard’ then to find which modem, among 128 same models, resides on port COM37! In short, if your machine has 2 serial ports and 1 Digiboard with 8 serial ports, they could be named: COM1, COM2, digi1A, digi2A, digi3A, digi4A, digi5A, digi6A, digi7A & digi8A as well as: COM1, COM2, COM5, COM6, COM7, COM8, … etc. So,
