I am too looking for similar integration. Although its very old post but still wanted to know @John Duffield that were you able to find any solution for this ? If yes, can you please share how you did it ?
Hi Aditya KukarAditya Kukar Cofounder, I am replying to your post of August 2018. I am also integrating, I am working for a company that is integrating its payment solution, with Micros Simphony Oracle.
Oracle provided to us a machine in which we have windows, and inside it runs the SIMPHONY Client 2.0 (2468) and we have a standard installation, we make orders using this machine (you login with the employee Object number, and you make an order of food/beverage).
Than my program uses the Transaction Service, that are available and setted up, so they returns to me a SOAP xml tat I have to parse (I've autogenerated the Java source code using a tool) and then I've modified this classes, I've build the agent. It took me several months. Communication with Oracle was very very bad, they don't reply, they are very uncommunicative.
For other questions I am here !