The environment typically runs on a Windows operating system, usually supported by the APTRA Advance Application Development Environment (Advance ADE) .
Communication between the terminal and the host follows a well-defined binary message format. According to the Advance NDC specification, each message includes specific fields for critical data elements like transaction type, amount, and security information. aptra advance ndc developer-s guide
A standard state entry consists of a fixed number of bytes defining: The functional logic to execute. The environment typically runs on a Windows operating
The host banking system downloads the configuration parameters, screen data, and state tables. aptra advance ndc developer-s guide
When modifying state tables, developers typically edit a state data file configuration. For example, a standard PIN entry state configuration dictates: The screen ID to display. The timeout values (usually 20–30 seconds).