For an interesting look at one of the early ATM networks, see Gifford and Spector’s article, “Case Study: The CIRRUS Banking Network,” Communications of the ACM

For an interesting look at one of the early ATM networks, see Gifford and Spector’s article, “Case Study: The CIRRUS Banking Network,” Communications of the ACM, August 1985. It’s posted here as an exhibit in a patent case: https://ptabdata.blob.core.windows.net/files/2017/CBM2017-00041/v10_Exh%201009%20-%20Cirrus%20p798-gifford%20Communications%20of%20the%20ACM%20August,%201985.pdf https://ptabdata.blob.core.windows.net/files/2017/CBM2017-00...