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Arris CM8200 for NBN HFC Status Lights

This article will explain the meaning of the status lights found on the Arris CM8200 Modem, the default nbn™ Connection Box for nbn™ HFC as of 1 March 2017. If you signed up before this date, you may have an Arris CM820 instead.

These lights may help you quickly check on the status of your connection which may be useful when troubleshooting.

Things to note

  • Note that ONLINE, DOWNSTREAM and UPSTREAM lights will all FLASH briefly when the Connection Box is powered on. This is a self-test and no action is needed, just wait for the Connection Box to finish booting up.
     
  • If both UPSTREAM and DOWNSTREAM lights are FLASHING but ONLINE light is OFF, there is no connection to the nbn™ network. Please call us on 13 22 58 for assistance.
     
  • If both UPSTREAM and DOWNSTREAM lights are FLASHING and ONLINE light is ON, a firmware update is in progress. No action is needed - simply wait for the update to complete.

Status lights

On the back

The UNI-D1 port on the back of the Connection Box has LINK lights to indicate cable connection to a computer or router.

  • Green: Cable connection detected. If this light is off, try another CAT5e or CAT6 Ethernet cable.
  • Yellow: Old CAT5 Ethernet cable is in use - this may not allow throughput of the full speed of your nbn™ HFC service.

On the front

Light State Meaning
POWER Off Connection Box has no power.
Green Connection Box has power.
DOWNSTREAM Off Connection Box has no power.
Green Successful downstream connection.
Flashing Searching for downstream connection. If ONLINE light is on, firmware upgrade in progress.
UPSTREAM Off Still searching for downstream connection, or Connection Box has no power.
Green Successful downstream connection.
Flashing Downstream connection found; searching for upstream connection. If ONLINE light is on, firmware upgrade in progress.
 ONLINE Off Connection Box is offline or has no power.
Green Connection Box is online and browsing should be possible.
Flashing Downstream and upstream connection found; retrieving setup information from NBN.

 

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