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Cox Scientific Atlanta Webstar DPX2100 Manual

Cox Scientific Atlanta Webstar DPX2100 Manual Image


Modem Information

Cable Modem

DOCSIS 2.0 with speeds of up to 25 Mbps on a wired connection.

Cox recommends a DOCSIS 3.1 modem or gateway

What does this mean?

Highest Service Level


Front View

Front view of Scientific Atlanta Webstar Dpx-2100 Cable Modem

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After the cable modem successfully registers on the network, the POWER, PC, and CABLE indicators illuminate continuously to indicate that the cable modem is online and fully operational.

Back View

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The Scientific Atlanta DPX-2100 has the following ports available on the back of the modem.
  • POWER – Connects the cable modem to the power adapter
  • RESET – Resets the cable modem
  • ETHERNET – Connects to the Ethernet port on your computer
  • USB – Connects to the USB port on your computer
  • CABLE IN – Connects to the cable wall outlet

MAC Address

Example Mac Address Label

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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.


The modem lights indicate the current status of your cable 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.
PC Off / Blinking No Ethernet / USB signal. Verify cable connections and try resetting the modem.
Solid None. Ethernet / USB carrier present.
Cable Solid None. Registered on the network.
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, you must contact Cox with your MAC address. If there are several MAC addresses on the modem, use the HFC or RF MAC address.
Off No cable connection. Verify all cable connections and try resetting the modem.
Data Blinking None. Software upgrade or cable activity.

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