TNPP is before my time in paging - did you work in the industry?
Yes, I did. Motorola, back when the pager was the communication device everyone had, or wanted, as cell phones where way to expensive. :-)
Prior r to the FLEX paging protocol, most links were RS-232 (even the consoles), or lease line. Internet was still in its infancy.
When Mot shuttered paging, I moved onto cellular base stations. Now, even that has ended.
It's a shame.
You said "before my time in
paging." Are you (were you) in it?