3.7 Numbering plans
Numbering plans are used to manage accessibility in your company. In a numbering plan, your company's telephone numbers can be linked to internal extensions to route incoming calls in a controlled manner. By configuring specific times in conjunction with numbering plans, you can automatically manage how and at what time your company can be reached.
Numbering plans are created for you in Operator and can be selected and, as far as time configuration is concerned, changed in the Contact REACH app. See also
5.5 Select and change numbering plans.
A numbering plan scheme includes:

One or more numbering plans (table(s) linking external telephone numbers with internal extension numbers).

A time configuration