Use the NetTrace utility to see raw hex data moving between the ATM and the Host.
Screens in Advance NDC are decoupled from the core application logic. They are downloaded directly from the host or loaded from a local disk repository.
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"url": "https://your-app.com/webhooks/aptra", "events": ["order.ticketed", "order.cancelled", "offer.expired", "schedule.change"], "secret": "your_verification_secret" aptra advance ndc developer-s guide
The heart of an NDC application is its state logic. The host downloads a sequence of states to the ATM, where each state is represented by a specific letter identifier (e.g., State A, State B). Core State Types Developers must master these foundational state types:
010 : Next state if the card is left in the slot (chip card error handling).
[Message Class] [Device Simulator] [Logical Unit Number] [Time Variant] [Transaction Data] Use the NetTrace utility to see raw hex
The host responds with a containing instructions on how to complete the interaction.
Identifies the transaction type (e.g., Savings Withdrawal). Host Authorizations (Host to ATM)
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APTRA Advance NDC (NCR Direct Connect) is the most popular self-service banking software developed by NCR, designed for environments that use the NDC protocol. It served as a cornerstone for NCR and many third-party ATMs following the industry's migration from OS/2 to Microsoft Windows, bridging the gap left by legacy products.
Security is paramount in ATM development. APTRA Advance NDC enforces strict cryptographic standards directly out of the box.