It will, ther just isn’t much call for it. I used to be in manged services and for some clients analog backup was a requirement, but you typically want those using a POTS line because they are less susceptible to power and network outages. FoIP is a thing, FAX shares the same basic principles, and there are protocols and codecs specifically tailored to provide better FAX transmission reliability.

Look up PCM, It’s pretty interesting if your into that sort of thing, and there is plenty of room to chase the rabbit.

I doubt it, major shift with most carriers to get rid of old switching gear. New gear isn’t being made, old gear is expensive to maintain, and FFC has been changing a lot of rules around the service. Its now, near impossible to get new POTS traditional services anymore. Today it’s mostly POTS in a box; 5G wireless to a ATA device, with battery backup for survivability.

Major telecommunication companies collected billions of dollars through state rate increases and tax breaks since the 1990s under the promise of building high-speed fiber-optic networks, but largely failed to deliver the fully realized infrastructure.

So we pay, nothing happened, and now out of fairness, deal with it?

Brilliant!