Numbering Plan

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With the advent of our PBX service on sat5, we need a numbering plan!


  • 1 XXXX - "User" numbers, each user can have one or more numbers from here, for use with actual phones
  • 2 XXXX - "User Service" numbers, redial, voicemail, etc
  • 4 XXXX - "Global Service" numbers, numbers that do something useful/fun
  • 8 ... - "Dial-out" prefix, to access other trunked PBXs
  • others - Reserved


Why five-digit numbers?

I felt like it. Four digits after each prefix will probably (i say) be enough. Though there is nothing stopping us from using variable-length numbers in the future.

Who can I call?

See the Directory