Differences between version 3 and previous revision of E164.
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| Newer page: | version 3 | Last edited on Friday, August 14, 2009 4:34:36 pm | by GerwinVanDeSteeg | Revert |
| Older page: | version 2 | Last edited on Friday, August 14, 2009 12:54:33 pm | by GerwinVanDeSteeg | Revert |
@@ -17,10 +17,11 @@
__A__: This works for ''most'' cases, there are however local area codes around the world which do have a 0 in them. In New Zealand we have the 02, 03, 04, 06, 07,09 local area codes where the initial 0 is the local access code. Certain countries use 2-3 digit area codes, and if using their local 0 access code you would get 009 for example. Stripping away the local 0 access code for that country, we are still left with a 09 prefix. And again would result in a number space clash.
__Q__: How about if we use the length of a number to distinguish between number space clashes
-__A__: Again this works in most cases, for example in the 800 range described earlier the UIFN number is 800 with 8 additional digits, whilst the NZ 800 numbers have an additional 5-7 digits (there is a clash here between the Number Administration Deed document which states exactly 6 digits, and the NZ Dialplan provided to the ITU by the NZ Goverment which provides a range of 5-7 digits). A case where it does not work for example is the 230 number range, which is defined in NZ as part of the 23 number range with 6-7 additional digits, and Mauritius which has a country code prefix of 230 with an additional 6 digits to indicate the local number. And yes, the 023 number range in NZ has been allocated to a TelCo, it is not quite yet in use.
+__A__: Again this works in ''
most''
cases, for example in the 800 range described earlier the UIFN number is 800 with 8 additional digits, whilst the NZ 800 numbers have an additional 5-7 digits (there is a clash here between the Number Administration Deed document which states exactly 6 digits, and the NZ Dialplan provided to the ITU by the NZ Goverment which provides a range of 5-7 digits). A case where it does not work for example is the 230 number range, which is defined in NZ as part of the 23 number range with 6-7 additional digits, and Mauritius which has a country code prefix of 230 with an additional 6 digits to indicate the local number. And yes, the 023 number range in NZ has been allocated to a TelCo, it is not quite yet in use.
+__NB__: As for number length, I don't think you'd want to program the dialplan for your local region into your PBX especially not if your developing a commercial product with International customers.
By using the E164 recommendation you avoid any number space clashes between National and International numbers.
