View source for IBM 3720

{{Use mdy dates|date=October 2012}}
The '''IBM 3720''' was a communications controller ([[front-end processor]]) made by [[International Business Machines|IBM]], suitable for use with IBM [[System/390]]. The 3720, introduced in 1986, was capable of supporting up to 60 communications lines, and was a smaller version of the 3725.<ref>{{cite news|last=Korzeniowski|first=Paul|title=IBM 3720 Cuts Costs|url=https://books.google.com/books?id=gxwEAAAAMBAJ&q=ibm+3720+description&pg=PA13|access-date=September 1, 2012|newspaper=Network World|date=July 20, 1987}}</ref>  Official service support was withdrawn in 1999 in favour of the [[IBM 3745]].

The IBM 3720 is unrelated to the similarly numbered [[IBM 3270]] display terminal system.

==References==
{{Reflist}}

==External links==
*[http://bitsavers.trailing-edge.com/pdf/ibm/372x/ce/SY33-2039-1_3720_Service_Guide_May87.pdf IBM 3720 Communication Controller Service Guide (PDF)] {{Webarchive|url=https://web.archive.org/web/20170118155318/http://bitsavers.trailing-edge.com/pdf/ibm/372x/ce/SY33-2039-1_3720_Service_Guide_May87.pdf |date=January 18, 2017 }}

[[Category:IBM mainframe peripherals|3720]]
[[Category:Networking hardware|*]]


{{mainframe-compu-stub}}