Multiple devices icon

No connection - All devices

Check the modem status lights

If you're still having connection problems, look at the light on the front of your C4000. A green light means the modem is getting a signal from the network. Flickering green means data is being sent over the network. If it's not green, see below for details.

C4000 gateway modem with green status light
  • What color is the light?
  • Blinking blue
  • Blue
  • Red
  • Blinking green and red
  • Blinking green
  • Blinking orange and green
C4000 with blinking blue light animation

Blinking blue light

 

Booting up

C4000 with blue status light

Solid blue light

 

Syncing with the network during bootup. If it gets stuck in this mode longer than 10 minutes, try unplugging and reboot. If it repeats, you'll need help from a technician.

C4000 with red status light

Solid red light

 

Network failure. You'll need help from a technician to fix this.

C4000 with blinking red and green light animation

Blinking red and green light

 

Network error. You'll need help from a technician to fix this.

C4000 with blinking green and white light animation

Blinking green light

 

WPS is trying to sync with a device. Light will blink red several times if the connection fails, or return to solid green after connecting successfully.

C4000 with blinking green and orange light animation

Blinking green/orange (or green/white) light

 

Firmware update in progress. No action needed.

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