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I wonder how the ATM Machine - (Automated Teller Machine) generally connects to the BANK for Debit card PIN authentication and verification, Do they use direct VSAT (satellite) connection or they route through the public network? I would like to understand how the communication takes place while someone withdraw money from the ATM Machine - (Automated Teller Machine) Thanks!
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I wonder how the ATM Machine - (Automated Teller Machine) generally connects to the BANK for Debit card PIN authentication and verification, Do they use direct VSAT (satellite) connection or they route through the public network? I would like to understand how the communication takes place while someone withdraw money from the ATM Machine - (Automated Teller Machine) Thanks!

How ATM Machine - (Automated Teller Machine) gets connected to WAN ?

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.