Business phone number management: a lifecycle for DIDs and call routes
Manage business phone numbers as operational assets with ownership, purpose, routing, porting records, review and safe retirement.
Topics
Telephone numbering
Telephone number formatting examples
Examples of local, national, international, and E.164 telephone number formats, with rules for storing and routing numbers safely.
Telephone numbering and dialing hub
Learn E.164 formatting, international dialing codes, number portability, caller ID, emergency routing, and VoIP dial plans.
Number portability: what changes during a VoIP number port
Understand donor and recipient carriers, routing changes, cutover planning, validation, and common failure modes during number porting.
E.164 number formatting for VoIP and phone systems
Learn how to store, normalise, validate, display, and route telephone numbers using the international E.164 numbering format.
International dialing codes
Understand country codes, E.164 formatting, domestic trunk prefixes, and the checks needed before routing international calls.