Digi CM - Manual (Page 14)

Web Interface Access Menu
14 Chapter 1
If you are conducting a special task through the console port, like BIOS
upgrade and should not be interrupted, you can notify other users by entering
a comment upon connect. This comment is shown here.
3. Select a port by clicking the icon in the C (Console) column.
A Java applet or Telnet window opens with a login prompt.
The web interface can also be configured to call a local Telnet or SSH
application, see "Configuring Host Mode" on page 47.