Community setup guide · Customer guide

Numbering Plan

A Global CEN Number has exactly 10 digits: AAA-XXX-YYYY. AAA is the unique three-digit CEN Area Code; XXX is the member’s existing three-digit Local Block; YYYY is its four-digit member-controlled number. The seven-digit Local Number is XXXYYYY. Leading zeros are significant. Network A (214) may use blocks 315 and 427: 214-315-1234 and 214-427-2000. Network B (527) can also use block 315: 527-315-1234 is a different destination. Local Blocks do not have to be registered centrally.

Local Number: 315-1234
Global CEN Number: 214-315-1234
Typical PBX dialing: 88-214-315-1234

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