The OSI Layers originated out of Telcos/PTTs. They more resemble a model of a Global Communications network akin to Videotex[1] than to how things work over the

The OSI Layers originated out of Telcos/PTTs. They more resemble a model of a Global Communications network akin to Videotex[1] than to how things work over the Internet. This becomes apparent when one looks into the history of Videotex and the structural makeup of Telcos/PTTs. Take a look here: https://en.wikipedia.org/wiki/TM_Forum#OSI/Network_Management_Forum https://en.wikipedia.org/wiki/TM_Forum#OSI/Network_Managemen... And here: https://books.google.com/books?id=k9sFgIM-z6UC&lpg=PT152&ots=UhrSdDRSdD&pg=PT150#v=onepage&q=Green%20Side%20Up&f=false https://books.google.com/books?id=k9sFgIM-z6UC&lpg=PT152&ots... [1] https://en.wikipedia.org/wiki/Videotex https://en.wikipedia.org/wiki/Videotex