From aeef7cc6a1032593072a58721115ef723e72911b Mon Sep 17 00:00:00 2001 From: Trevor Pilley Date: Thu, 24 Oct 2024 19:44:04 +0100 Subject: [PATCH] Update CONTRIBUTING.md --- CONTRIBUTING.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md index 5fb2e7250..5859929cc 100644 --- a/CONTRIBUTING.md +++ b/CONTRIBUTING.md @@ -77,6 +77,8 @@ The name of the area a geographically assigned number is allocated to, preferabl Can be specified in the same way as national destination code ranges. +Note however for numbering plans that do not use national destination codes but have variable length subscriber numbers which all start with the same digits, each segment needs specifying individually by length. For example, if the numbering plan states NSN starting 26 with a min length of 6 and a max length of 7 the data file would need to contain `260000-269999,2600000-2699999`. If it was defined as `260000-2699999` it would incorrectly include the number `2599999`. + #### Hint Optional but can be one of: