After the cable modem is successfully registered on the network, the POWER, RECEIVE, SEND, and ONLINE indicators illuminate continuously to indicate that the cable modem is online and fully operational.
MAC addresses are written as 12 digits containing both letters and numbers (0-9, A-F). A MAC address is unique. The first six characters of the MAC address are unique to the manufacturer of the device.
Troubleshooting
The lights indicate the current status of your modem. To troubleshoot any connection problems, use the table below.
Modem Light
Status
Problem
POWER
Off
No power. Verify power supply connections, the power switch on the modem itself, the electrical outlet, and make sure the outlet is not connected to a switch.
Flashing
An error has occurred during normal operation. Verify all cable connections and try resetting the modem.
RECEIVE
Slow Flashing
Searching for cable connection. Verify all cable connections and try resetting the modem.
Fast Flashing Modem
Searching for cable connection. If this is a new modem or a replacement modem, contact Cox with the MAC address. If there are several MAC addresses on the modem, use the HFC or RF MAC address.
Off
No connection cable connection. Verify all cable connections and try resetting the modem.
SEND
Flashing
Scanning for the upstream frequency. Verify all cable connections and try resetting the modem.
ONLINE
Flashing
Scanning for the network connection. Verify all cable connections and try resetting the modem.
ACTIVITY
Blinking
None. Transmitting or receiving data via Ethernet.
