Mike's PBX Cookbook

Checking the LEDs


A summary of various IPOffice hardware LED indicator meanings.

Control Unit LEDs

LEDDescription
Optional SD

System SD
  • Off = Card shutdown.
  • Green On = Card present.
  • Green Flashing = Card in use.
  • Orange On = Reset imminent.

  • Red On = Card failure/wrong type.
  • Red Flashing = Card initializing or shutting down.
  • Red Fast-Flashing = card full
  • CPU
  • Red/Green Alternate = Starting up.
  • Green On = Okay.
  • Red On = No software.
  • Red Flashing = Error/Shutdown.
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    Base Card LEDs

    Base CardLEDs 1 to 8 Usage
    All Cards LED1 is also used for base card status:
  • Red On = Error
  • Red Slow-Flash = Initializing.
  • Red Flash every 5 seconds = Card okay.
  • Red Fast-Flash = System shutdown.
  • IP500 Analog
    Phone
    No status LEDs are used for analog phone extensions.
    IP500 Digital
    Station
  • Green On = Phone detected.
  • IP500
    Combination
    LEDs 1 to 6
  • Green On = Phone detected.
  • IP500 VCM LEDs 1 to 8 are unlabelled. They are used to indicate voice compression channel usage. Each LED lit represents 12.5% of the available voice compression channel capacity in use (total card capacity rather than licensed capacity).
    IP500 4-Port
    Expansion
    LEDs 1 to 8 are used for the expansion ports on the rear of the control unit. LEDs 9 to 12 are used for the card's own expansion ports.
  • Green On = Expansion module present.
  • Red Flashing = Initializing.
  • Red On = Error.
  • Orange Regular-Flash = Base card okay.
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    Trunk Daughter Card LEDs

    All cards LED 9 is also used for daughter card status.
  • Red On = Error
  • Red Slow-Flash = Initializing.
  • Red Flash every 5 seconds = Card okay.
  • Red Fast-Flash = System shutdown.
  • Analog Trunk
  • Green On = Card fitted.
  • Green Flashing = Trunk in use.
  • PRI Trunk
  • Off = No trunk present.
  • Green On = Trunk present.
  • Green Flashing = Trunk in use.
  • Red/Green Fast-Flash (port 9) or Green Fast-Flash (port 10) = Alarm indication signal from remote end.
  • Red/Green Blink (port 9) or Green Blink (port 10) = Port in loopback mode (set in System Monitor).
  • BRI Trunk
  • Off = No trunk present.
  • Green On = Trunk present.
  • Green Flashing = Trunk in use.
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    External Expansion Module LEDs

    Any Expansion
    Module
  • Green On = Module okay.
  • Red Flashing = Module starting up/Loading firmware.
  • Green Flashing = Module starting up/Loading firmware (IP500 DS16A/30A module).
  • Red On = Error.
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