You can use the status lights on your optical network terminal (ONT) to help find and fix internet issues. An ONT may also be called a Service box.
If you’re having issues and can’t get your ONT to power up, contact us.
Status light | State | Description and action needed |
POWER | Green (solid) | The ONT is on. |
Off | The ONT is off. You should:
| |
Red | There’s a problem with the ONT. | |
PON | Green (solid) | The ONT is connected to the AT&T network. |
Green (flashing) | The ONT is connecting to the AT&T network. | |
Off | You should:
| |
ALARM | Off | The ONT is working properly. |
Red (solid) | The ONT isn’t working as expected. Make sure the fiber cable is connected to the PON port. | |
DATA | Off | The Ethernet isn’t working. You should:
|
Green (Solid) | The ONT is connected to your gateway at 10 or 100Mbps. | |
Green (flashing) | The ONT has data activity at 10 or 100Mbps. | |
Yellow (Solid) | The ONT is connected to your gateway at 1000Mbps. (Service speed may vary) | |
Yellow (Flashing) | The ONT has data activity at 1000Mbps. (Service speed may vary) |
If you’re having issues and can’t get your ONT to power up, contact us.
Status light | State | Description and action needed |
PWR | Green (solid) | The ONT is on. |
Off | The ONT is off. You should:
| |
BTRY | Off | This isn’t used for your AT&T internet service. |
FAIL | Off | The ONT is working as expected. |
Green (solid) | There’s a problem with the ONT. | |
Green (flashing) | The ONT is connecting to the AT&T network. | |
LAN 1G | Green (solid) | The ONT is connected to your gateway. |
Green (flashing) | The ONT has data activity. | |
Off | The Ethernet isn’t working. You should:
| |
LAN 10G | Off | This isn’t used for your AT&T internet service. |
NTWK | Green (solid) | The ONT is connected to the AT&T network. |
Off | The ONT isn’t working as expected. | |
MGMT | Green (solid) | The ONT is connected. |
Green (flashing) | The ONT is downloading software. | |
Off | The ONT isn’t connected to the AT&T network. |
Check to make sure the power supply LED is On and Green. If it isn’t, make sure it’s plugged in to a working outlet.
If it’s plugged in and still not working, contact us.