| LED | Power | Ethernet | DSL | Internet | Activity |
| Off | Modem is not powered on. | No Ethernet connectivity or modem is not powered on. | Modem is not powered on. | On-board PPPoE Client is not in use (modem is bridged) or modem is not powered on. | No inbound Internet traffic or modem is not powered on. |
| Green | Modem is powered on. | Lan Device is connected. | Modem is in sync. | On-board PPPoE Client is connected. (Note: LED may periodically blink with Internet traffic.) | N/A |
| Blinking Green | N/A | Lan traffic | Modem is attempting to sync. | On-board PPPoE Client is attempting to connect. | Inbound Internet traffic. |
| Blinking Red/Green | N/A | N/A | Modem failed to sync 3 times. | N/A | N/A |
| Blinking Red | Power On/Self-Test | N/A | No DSL signal. | N/A | N/A |
| Red | POST Failed. | N/A | N/A | On-board PPPoE Client failed to connect. | N/A |