4 ms·
Probably UPT[0]. [0] https://en.wikipedia.org/wiki/Universal_Personal_Telecommunications https://en.wikipedia.org/wiki/Universal_Personal_Telecommuni...
by csnover 4y ago
Probably UPT[0].
[0] https://en.wikipedia.org/wiki/Universal_Personal_Telecommunications https://en.wikipedia.org/wiki/Universal_Personal_Telecommuni...
- gumby 4y agoHas it been implemented by any carriers? The US phone system had such a service for a few years (area code 500 iirc). It had so little uptake that it was shut down.