ISP Information:
This architecture allows computers to have a variety of advanced power management features.
ISP Glossary:
Dynamic Power Management Architecture - While the NANP system had its merits as you point out, the ITU nowadays is more logical.I think all you can conclude is that people like what they're used to.If you want to start an instant religious war, for example, ask peoplefrom different parts of the NANP whether you should be able to dial ashort distance toll call without dialing 1 first. First of all, it avoids all those area code changes that occur periodically in the states.Um, the UK and France have had their share of renumbering, too. TheNANP could have avoided most of the area code changes if stateregulators had looked ahead and done overlays sooner. It's apolitical problem, not a technical one. It also is simpler and more flexible. In countries like Germany, you can dial the number and the extension number.That's Direct Inward Dialing. We have that here in NANP-land, too.We probably had it first. There is no limit on the number of digits, as you point out, with the ITU system.Actually, the limit is 15 digits, raised from 12 a few years ago whenGerman PBXes got really long extension numbers. Here in France we have an implementation that permits easy dialing around for long distance calls, too.We have that, too. Dial 011-33-1-23-45-67-89-00 for a call to Pariswith your normal carrier, dial 1010XXXX first to pick a differentcarrier. Yeah, it's a lot of digits, we have a lot of phonecompanies.Like I said, people like what they're used to.Regards,John Levine johnl@iecc.com Primary Perpetrator of The Internet for DummiesInformation Superhighwayman wanna-be, http://iecc.com/johnl,Sewer Commissioner"A book is a sneeze." - E.B. White, on the writing of Charlotte's Web
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