@nprofile1q... I remember checking out a book from the PSU library about ATM and ISDN, because Bell Atlantic was building out their fiber to the neighborhood network. Big, thick tome written by a committee at Bell Labs.
(the book, not the specification)
(well, actually the specification too)
Then someone put that Stargazer tech (DSL) to use to send data instead of VOD and obsoleted all that equipment.
https://en.wikipedia.org/wiki/Tele-TV