clee phone AVC

What he probably means is that 2G is being dropped in his part of the USA, and he is generalising that to the rest of the world.

He has a habit of being myopic, e.g. phone billing systems and EV charging infrastructure.

Only in fields that are subject to experiment or equivalent rigorous verification.

Many aren't. They tend to drift and have fads. And often do a great deal of damage.

It is always possible to cherry pick examples until the "there's no such thing as a true Scotsman" becomes applicable.

be topped off. If the time were tracked by the network you could just add minutes easily. Instead you have have the phone get the added minutes ove r the air or buy a card and add the minutes by entering the number in the p hone.

other phone as you could if the network was tracking the minutes.

That's probably not the whole truth. A couple of years ago, for network-o bsolescence reasons, my pay-as-you-go phone had to be swapped out for a newer model, and there was no problem with the unused 'minutes'; they just showed up on the replacement.

I've got thickwire (500m limit), thinwire (200m) and twisted-pair as well as a couple of generations of optical Ethernet hardware and a little bit of AUI and AAUI wiring, stuffed in boxes somewhere. The thing is, there's a frame timing requirement that won't allow (even if the fiber has enough signal) the time delay of a long-ish link. Metropolitan area networks aren't Ethernet, they require a bridge and not just a media converter.

Does anyone still use that stuff? I remember it being slow and unreliable.

Me. Between 2 dos computers. driver:lh c:\ethernet\3c90xpd.com You can daysy chain those 3cxxx cards, and terminate with 50 Ohm(on both ends)