ATMC: Paperback, 68 pages, Zheng Cirino, OmniScriptum

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An ATMC (ATM Controller) is a system used in financial institutions to route financial transactions between ATMs, core banking systems and other banks. An ATMC is sometimes referred to as an "EFTPOS Switch." 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. 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.