Dial Up Server
Created a dial up server that connects to the back end ViewData service. The server can be run as a windows service or a console app.
Got the server to connect to the back end when the modem goes online, key presses were going from the terminal to the back end correctly but everything on the terminal screen was garbage.
Checked the back end was sending data to the dial up server and the characters expected seemed to be being sent to the terminal.
All I was getting was this...
Searched through the code and found the problem, after checking the serial settings over I noticed that the parity was set to None and it needed to be Even.
Changed the settings and got a connection from the back end.
Once this was working fixed a few things and tweaked the server to ensure that it disconnects from the back end correctly on modem disconnection.
Now that the server was working I've added some back end infrastructure to help me build pages etc. To start with the system now displays a nice "CONNECTED" message once it connects to the back end. Once you have finished on the system and exit from the menus the system will display "CONNECTION TERMINATED" and disconnect the modem.
So to demonstrate the system working I built a quick screen which loads from the server, the next step is to add a menu system.
I decided that the system should have a nice welcome screen which should pay homage to the original Prestel system...
To show the entire system working I knocked together a quick video if the system being dialed by the terminal...