Many of these even now remain on dial-up, so they just have a modem and the cable is a phone jack. If you have a favorite bodega ATM that always takes 15 secon

Many of these even now remain on dial-up, so they just have a modem and the cable is a phone jack. If you have a favorite bodega ATM that always takes 15 seconds to respond after you type your PIN, it's probably dialing. Newer ATMs almost certainly use wireless modems, if they aren't just connected to the Internet. Fun fact, the modems still negotiate at 2400 or 9600 baud, because the extended negotiation times of higher-speed protocols more than negate time saved in transferring the small payload. They even make gateways to bridge old dial-up ATMs to IP: https://atmpartmart.com/wireless-atm-modems/systech-box-ipg-7010-atm-modem https://atmpartmart.com/wireless-atm-modems/systech-box-ipg-...