Modem tech was used primarily before my time.
I've installed the realport driver on my workstation using com1 serial port.
I then set the Digi One SP to the port profile "real port".
I connected a modem to the Digi.
When I connected to the Digi through com1 using putty, I get a blank terminal window with a black background. When I enter AT to test the connection to the modem, I receive no response.
I have changed the cable between the modem and the Digi to see if that was to blame. What can I do to troubleshoot that I may be missing?