2007-01-21 04:12:12 · 4 answers · asked by Julia Q 1 in Business & Finance ➔ Other - Business & Finance
I would say most use land telephone lines. I suppose some my be using cell phone type technology.
2007-01-21 04:16:07 · answer #1 · answered by Gatsby216 7 · 1⤊ 0⤋
Bank ATMs, at bank locations, are hardwired into the bank's high speed network.
ATMs located away rom banks are usually connected by modem, though some may use ISDN or other always-on high-speed connections.
Satellites are not usually involved, but it's possible in case, say, of a gas station or other retailer which uses a satellite link for card transactions. In this case, it is merely the conduit for information,
2007-01-21 04:19:16 · answer #2 · answered by kx_wx 3 · 1⤊ 0⤋
they ant not entirely dependant on satellites they use high bandwidth secure internet connections from companies which provide them. and they are not linked with the public domains, if they are they would be through secure encrypted servers. they would be using satellite if inter country communicaiton is needed.
2007-01-21 04:23:25 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Many are telephone landline based. (like ATMs in 7-11)
2007-01-21 04:16:48 · answer #4 · answered by Peaches 4 · 1⤊ 0⤋