[mtmail]

Phone systems are also global. You create legislation and fines for not setting that value, but calls from legacy systems around the world still have to be supported. Or has anybody ever tried to call a number and got a "sorry, your phone is too old, you need to upgrade" response?

[gallerytungsten]

I used to have this great little compact cell phone made by Sony. At some point, it just stopped making calls, and Sprint's explanation was that their network no longer supported this phone.

[tinfoilman]

that would be funny, alas the only issue we have these days is "This call is not supported from a rotary dial phone"

In all my years I have only had 1 customer still using a rotary