"5000 Erlangs" - oh, they meant 5000 instances of some Erlang interpreter.
Not Erlang as a unit of measure.[1] One voice call for one hour is one Erlang.
"The origin of queueing theory dates back to 1909, when Agner Krarup Erlang (1878–1929) published his fundamental paper on congestion in telephone traffic [for a brief account, see Saaty (1957), and for details on his life and work, see Brockmeyer et al. (1948)]." -- https://www.sciencedirect.com/topics/engineering/queueing-th...
(It's amazing how little logging went on in the phone system before computerized switching. But that's another subject.)
Does 1 Animat convert to metric nitpicks?
You know you're successful once you're added to: https://www.theregister.com/Design/page/reg-standards-conver...