RF_Savage

And it was a pun by Ericsson engineers, as they used Erlang to program telephone switches where the capacity planing included Erlangs.

And Apple was involved in that as well, even if it was not planed. The pod in podcast coming from iPod after all.

Yeah...

But only for those areas with receiver coverage that feeds them.

But your own receiver will always cover your area.

SMS routing and billing systems did cost money. Especially billing, as the standards had nothing for it, so it was done by 3rd party software for a very long time.

M12 gets old quick if you do a lot plug/unplug cycles.

Not a single telco wants this. So it does not get built.

Interestingly DECT NR+ is a 5G standard on dedicated spectrum and has been designed to be a mesh from the start.

Viasat fixed modems got bricked at start of the war in Ukraine and some collateral one's in border areas.

The cheapies are less useful for debugging real problems, due to their bad UI and severe limitations.

A good, fast reacting multimeter is likely better thing to get than a cheap scope.

That said the cheapies might be usable for debugging audio stuff.

Can be done more cheaply if tou are good at reusing things and building.

Exploding The Phone was an excellent read.

Proper PoE sources have active per port current monitoring and will disable the PoE power in case of an over current event.

Good documentation and support.

All mosfets are like that. The marketing folksbL at Toshiba just were not able get it removed, or they have had one too many complaint from folks running them near the absolute max while not cooling them properly.