How many years until General Direct Dialed telephony dies?

Discuss.

As I'd posted this poll a week or so back, general direct-dialed telephony, a/k/a PSTN (public switched telephone networks) seem to be in trouble. I think we could be within five years of their total collapse. And no, not just land lines (already about 25% of their peak in much of the US), but _all_ direct-dialed phones: mobile and VOIP included.

The problem, as I'd written before, is paradoxically the _low_ cost of calls. This is inducing tremendous volumes of junk calls, with one ...

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free to pass those costs on to their upstream(s) until the problem is resolved, effectively de-profiting the trade) I suspect the underlying structural problems in PSTN are too severe, even in its mobile and VOIP variants.

And, more importantly, that the fixes won't come in time to prevent major defections from the network, which is what its death entails. As I posted to HN: within the next five years, at least one firm in the Fortune 100 will publicly cease use of PSTN. And for the ...

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