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This routing may be to a core banking system to check the available balances and to authorise the transaction, or to another bank's ATMC. For example, if a customer of Bank A used their card at an ATM belonging to Bank B, the message would be forwarded to Bank B's ATMC. The ATMC would examine the
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An important aspect of an ATMC system is its ability to perform stand-in processing when core banking systems are unavailable. This allows a bank's ATMs to operate (usually with reduced limits) during periods of outage or maintenance on core banking systems. ATMCs make use of a SAF
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A message may enter an ATMC from an ATM, another ATMC or a third party. When receiving a message, the ATMC will examine the message, validate the PIN block if present, and then route the message according to the leading digits of the account number referenced.
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message, and based upon the account number determine that the appropriate ATMC to contact would be Bank A. It would then forward the message to Bank A's ATMC for authorisation.
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and other banks. An ATMC is sometimes referred to as an "EFTPOS Switch". An ATM controller is key infrastructure in an
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