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System Renumbering Feature

Considerations and Constraints

Extensions do not need to be renumbered in the following cases:

• The default 2-digit extension numbers are acceptable.
• No special extension numbers are needed.
• There are fewer than 50 extensions in the system.

Any extension number except 0 (system operator) can be renumbered. Line/trunk numbers (801-880) can be renumbered.

After an extension is renumbered, the original extension number is available for use. For example, after Extension 32 is renumbered to 40, Extension 32 is available for use.

System renumbering should not be confused with board renumbering, which is used when modules in the control unit are changed. For additional information about board renumbering, see System Programming.

Topics
	Description
	2-Digit Numbering Plan 3-Digit Numbering Plan Set Up Space Numbering Plan Renumbering Extensions and Lines / Trunks Logical IDs
	At a Glance
	Considerations & Constraints
	System Programming
	Feature Interactions