IMSS required a new system for retrieving their study information. Previously done through XML files that are shared, MVI built a custom HL7 listening application. Created using Visual Studio, the application would listen at a specific port for a message. Once the message was received, the system would translate the data and store it in an MS SQL database. The system would also provide an ACK (acknowledgment) back to the sending application to let it know that we successfully received and processed their message.