Editing Packet switching (section)

====Tymnet====
[[Tymnet]] utilized virtual call packet switched technology including X.25, SNA/SDLC, BSC and ASCII interfaces to connect host computers (servers) at thousands of large companies, educational institutions, and government agencies. Users typically connected via dial-up connections or dedicated [[asynchronous serial]] connections. The business consisted of a large public network that supported dial-up users and a private network business that allowed government agencies and large companies (mostly banks and airlines) to build their own dedicated networks. The private networks were often connected via gateways to the public network to reach locations not on the private network. Tymnet was also connected to dozens of other public networks in the U.S. and internationally via X.25/X.75 gateways.<ref>{{cite conference |last=TYMES |first=LA ROY W. |title=TYMNET &mdash; A terminal oriented communication network |url=http://rogerdmoore.ca/PS/TYMNET/TY.html |conference= |volume=38 |pages=211–16 |archive-url=https://web.archive.org/web/20130509125506/http://rogerdmoore.ca/PS/TYMNET/TY.html |archive-date=2013-05-09 |access-date=2013-08-30 |book-title=Proceedings of the SJCC 1971 |url-status=dead}}</ref><ref>{{cite journal |last=TYMES |first=LA ROY W. |date=April 1981 |title=Routing and Flow Control in TYMNET |url=http://www.rogerdmoore.ca/PS/TYMFlow/TF.html |url-status=dead |journal=IEEE Transactions on Communications |volume=COM-29 |issue=4 |pages=392–98 |doi=10.1109/tcom.1981.1095020 |archive-url=https://web.archive.org/web/20131020140315/http://rogerdmoore.ca/PS/TYMFlow/TF.html |archive-date=2013-10-20 |access-date=2013-08-30|url-access=subscription }}</ref>