noun
numbering plan
Technical term in telecommunications and computing for a scheme that assigns and manages telephone numbers or other identifiers.
新しい番号計画が来年から実施される。
The new numbering plan will be implemented from next year.
この国では、携帯電話用の番号計画が変更された。
In this country, the numbering plan for mobile phones has been changed.
Refers to a specific telephone number, while 番号計画 is the system or plan for assigning such numbers.
Compound of 番号 (number) and 計画 (plan). A straightforward modern technical term.