Editing Packet switching (section)

====SITA HLN====
[[SITA (IT company)|SITA]] is a consortium of airlines. Its High Level Network (HLN) became operational in 1969. Although organised to act like a packet-switching network,<ref name="Roberts1978" /> it still used [[message switching]].<ref>{{cite conference |last=Chretien |first=G.J. |author2=Konig, W.M. |author3=Rech, J.H. |date=1973 |title=The SITA Network |url=http://rogerdmoore.ca/PS/SITAB.html |location=Sussex, United Kingdom |publisher=Noordhoff International Publishing |pages=373–396 |archive-url=https://web.archive.org/web/20131020140241/http://rogerdmoore.ca/PS/SITAB.html |archive-date=2013-10-20 |book-title=Proceedings of the NATO Advanced Study Institute on Computer Communication Networks |url-status=dead}}</ref><ref>{{Cite web |title=Interview of Donald Davies |url=http://archive.computerhistory.org/resources/access/text/2017/11/102738594-05-01-acc.pdf}}</ref> As with many non-academic networks, very little has been published about it.