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> Right off the top of my head the 513 NPA (Ohio-ish) has a 988 NXX so there's a thousand potential phone numbers that have to change. They can just require 10

> Right off the top of my head the 513 NPA (Ohio-ish) has a 988 NXX so there's a thousand potential phone numbers that have to change. They can just require 10 digit dialing for that area code. It's already been required on may others. > Some people program some PBX dialplans such that pretty much any stream including the regex 911 goes to 911 (dial 9 for outside line and 911, dial 911 without a leading 9, etc) and they're going to try that with 988 with predictable results (try to call your buddy who used to be extension 9889 and you're mysteriously connected to a hotline). That would break so many things if they did that today. Numbers can contain "911" within them and have nothing to do with 911. If they've made it this long with a broken dial plan, adding another broken match for 988 won't change much as they're already used to not being able to dial thousands upon thousands of numbers. > The international phone dialing country code for Bangladesh is 880, that country code will have to change because some fraction of PBX programmers and users are going to F it up (as usual) and route all "9 for outside line 880 for Bangladesh then 123456 for the lnum" calls to the hotline. Generally you have to dial an international call prefix before the country code, so this is a non issue. Without it, the phone system won't know if you're trying to reach country code 44 for the UK, or area code 440, 441, 442, 443, or 445 in the US.

VLM 7y ago
Yes I agree completely with your calm and rational analysis. Technically completely correct. The problem is the whole point of the system is its for users who are not calm and rational. I've never seen a scenario in the real world where making a system more complicated helped users who were not calm and rational.
thaumasiotes 7y ago
> Generally you have to dial an international call prefix before the country code, so this is a non issue. Without it, the phone system won't know if you're trying to reach country code 44 for the UK, or area code 440, 441, 442, 443, or 445 in the US. ...are you in the US? That isn't true at all. You start with the country code. You can't reach any of the area codes you mentioned by dialing a number starting with the area code, because you have to start with 1, the US country code. Outside the US, you can use the more unambiguous country code 001 to reach the US. (e.g. I had difficulty calling the US from China because normal American 11-digit numbers starting with 1 are processed by Chinese carriers as 11-digit Chinese cell phone numbers. But there, like here, there was no "international call prefix". You just start right off with the country code.)
- RKearney 7y ago
  > You can't reach any of the area codes you mentioned by dialing a number starting with the area code, because you have to start with 1, the US country code. You absolutely can. 443, and 445 allow for 10 digit dialing. 442 requires a 1 prefix. https://nationalnanpa.com/enas/npasRequiring10DigitReport.do https://nationalnanpa.com/enas/npasRequiring10DigitReport.do In the USA you need to dial 011 (the exit code) before dialing a country code. You can't just pickup the phone and dial any countries country code and expect it to work. If you're on a phone system that supports it, you can dial +[country code] where the phone system will translate + into your countries exit code. > Outside the US, you can use the more unambiguous country code 001 to reach the US. (e.g. I had difficulty calling the US from China because normal American 11-digit numbers starting with 1 are processed by Chinese carriers as 11-digit Chinese cell phone numbers. But there, like here, there was no "international call prefix". You just start right off with the country code.) Only in countries where the exit code is 00. The Country Code for the USA is 1, so in a country where the exit code is 00 that would translate to 001. In Hong Kong, the exit code is 001, so if you wanted to reach the US you would dial 001 1 then the US area code and number.
- nulbyte 7y ago
  > ...are you in the US? That isn't true at all. You start with the country code. With limited exceptions (e.g. on cell phones or VoIP that automatically corrects you), to dial a domestic long distance call, you actually begin with the domestic long distance prefix, which just happens to be 1 in the US. This is entirely separate from the NANPA country code, which also just happens to be 1.

VLM 7y ago

Yes I agree completely with your calm and rational analysis. Technically completely correct. The problem is the whole point of the system is its for users who are not calm and rational. I've never seen a scenario in the real world where making a system more complicated helped users who were not calm and rational.

thaumasiotes 7y ago

> Generally you have to dial an international call prefix before the country code, so this is a non issue. Without it, the phone system won't know if you're trying to reach country code 44 for the UK, or area code 440, 441, 442, 443, or 445 in the US. ...are you in the US? That isn't true at all. You start with the country code. You can't reach any of the area codes you mentioned by dialing a number starting with the area code, because you have to start with 1, the US country code. Outside the US, you can use the more unambiguous country code 001 to reach the US. (e.g. I had difficulty calling the US from China because normal American 11-digit numbers starting with 1 are processed by Chinese carriers as 11-digit Chinese cell phone numbers. But there, like here, there was no "international call prefix". You just start right off with the country code.)

RKearney 7y ago
> You can't reach any of the area codes you mentioned by dialing a number starting with the area code, because you have to start with 1, the US country code. You absolutely can. 443, and 445 allow for 10 digit dialing. 442 requires a 1 prefix. https://nationalnanpa.com/enas/npasRequiring10DigitReport.do https://nationalnanpa.com/enas/npasRequiring10DigitReport.do In the USA you need to dial 011 (the exit code) before dialing a country code. You can't just pickup the phone and dial any countries country code and expect it to work. If you're on a phone system that supports it, you can dial +[country code] where the phone system will translate + into your countries exit code. > Outside the US, you can use the more unambiguous country code 001 to reach the US. (e.g. I had difficulty calling the US from China because normal American 11-digit numbers starting with 1 are processed by Chinese carriers as 11-digit Chinese cell phone numbers. But there, like here, there was no "international call prefix". You just start right off with the country code.) Only in countries where the exit code is 00. The Country Code for the USA is 1, so in a country where the exit code is 00 that would translate to 001. In Hong Kong, the exit code is 001, so if you wanted to reach the US you would dial 001 1 then the US area code and number.
nulbyte 7y ago
> ...are you in the US? That isn't true at all. You start with the country code. With limited exceptions (e.g. on cell phones or VoIP that automatically corrects you), to dial a domestic long distance call, you actually begin with the domestic long distance prefix, which just happens to be 1 in the US. This is entirely separate from the NANPA country code, which also just happens to be 1.