IBM 3720


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IBM 3720

(hardware)
A communications controller made by IBM, suitable for use in an IBM S/390. Official service support was withdrawn in 1999 in favour of the IBM 3745.

http://ibm.com/search?q=3720&realm=Networking.
References in periodicals archive ?
In April, an IBM 3720 front end processor was installed in the computer room at the Stony Point Operations Center and connected to Data Systems (now BISYS) mainframe by way of a leased digital 56 kb/s line.