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Recommended Extension Numbering - Knowledgebase / On Q UC / General Information - On Q HelpDesk

Recommended Extension Numbering

Authors list
  • Andrew Edington

Overview

We highly recommend utilising an extension numbering schema in your organisation. Plan your extensions before provisioning users. With a comprehensive plan that includes extension length, leading digits, and which extensions to avoid, new users can then be efficiently added for years to come. Consistency is key.

3-Digit

Number Range

Feature/Function

x11

Avoid This Format

100-199

Extensions

200-299

Extensions

300-399

Extensions

400-499

Call Queues

500-599

Call Queues

600-699

Conferences

700-799

Call Parks

800-899

Auto Attendants

900-999

Auto Attendants

4-Digit

Warning

Extensions 5000 & 5001 are system reserved for access to voicemail.

Number Range

Feature/Function

1000-1999

Extensions

2000-2999

Extensions

3000-3999

Extensions

4000-4999

Call Queues

5002-5999

Call Queues

6000-6999

Conferences

7000-7999

Call Parks

8000-8999

Auto Attendants

9000-9999

Auto Attendants


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