Yes as a former member of TEC (Tymnet Engineering centre) the whole OSI networking tech is poorly documented. I remember running map reduce code on the largest

Yes as a former member of TEC (Tymnet Engineering centre) the whole OSI networking tech is poorly documented. I remember running map reduce code on the largest(non black) UK PR1ME network in the 80's which was cool. OSI's problem was it was designed in a world where each country would usually have a single PTT - in the UK it also suffered from not billing as an all you can eat model.