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Technicolor CGA4131



Modem Information

DOCSIS 3.1 Dual Band 802.11-AC 

32x8 channel bonding

Compatible with future speed increases

Highest Service Level

Cox Business Gigabit


Front View

Image of Front Modem ViewClick to enlarge.

After the cable modem is successfully registered on the network, a single solid white LED illuminates continuously to indicate that the cable modem is online and fully operational.

Important: After connecting the modem for the first time, wait 10-15 minutes before attempting to complete the WiFi setup or get online. Do not unplug the modem from power or factory reboot the modem during the initial 10-15 minute firmware download and modem registration process.


Back View

Image of Modem Rear View

Click to enlarge.


The Technicolor CGA4131 has the following ports available on the back of the modem.

  • Eight Telephone ports - The CGA4131 supports up to eight traditional phones or DECT base station to connect to the gateway. Single-line customers can use the Tel 2/Alarm port to connect an auto dial alarm system.
  • Eight Ethernet ports - The first 4 Ethernet ports each can transfer up to 1 Gbps data, while ports 5 to 8 can have a combined data transfer speed of 1 Gbps.

    Note: For our Cox Business Fiber Internet customers, only seven Ethernet ports are available. The first port is used to connect the gateway to the ONT, so that the gateway is configured in eWAN mode as a router.
LED LED Status Description

Left LED (Green)

Off Not connected to a Gigabit Ethernet device
Blinking Connected to a Gigabit Ethernet device and sending/receiving data.
Solid On Connected to a Gigabit Ethernet device

Right LED (Amber)

Off Not connected to a 100Mbps/10Mbps device
Blinking Connected to a 100Mbps/10Mbps device and sending/receiving data.
Solid On Connected to a 100Mbps/10Mbps device
  • Cable port - Connects to the cable wall outlet
  • USB port - USB port is used to connect USB devices
  • POWER - Connects the modem to the power cord

To help prevent errors during installation, connect the coax cable to a cable outlet first, then connect the power cord to an electrical outlet.


MAC Address and Network Name (SSID)

Image of MAC Address

Click to enlarge.


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.

Initial installation requires that the Network Name (SSID) and password be changed. The Network Name (SSID) and password listed on the bottom of the device are only used to connect to the modem during the initial install. Technicolor recommends that a single Network Name (SSID) is used for the CGA4131 because the modem automatically chooses the best network for each connected device. Ensure all WiFi-ready devices recognize the single Network Name (SSID).

When connecting to the Guest WiFi or Cox WiFi SSID for the first time, you may be required to review and accept the Acceptable Use Policy terms and conditions.


The lights indicate the current status of your WiFi modem. To troubleshoot any connection problems, use the table below.

Modem Light Status Problem
Ethernet LED Off Ethernet is not enabled.
Solid On Ethernet is enabled with AC power.
Ethernet Ports 1-8 Off The port is not connected.
Solid On The port is connected.
Flashing Data is being transferred.
Internet LED Off There is no internet service.
Solid On Internet service is active.
Wi-Fi LED Off Wi-Fi access point is not enabled.
Blinking Data (2.4GHz or 5GHz) is active over the wireless connection.
Online LED Blinking Trying to acquire upstream and downstream frequencies.
Solid On Connected to the service provider’s network. Even when Internet is not active, LED is on. Data traffic can be used.

Telephone Lines 1-8 LEDs

Off Battery is not installed.
Blinking Trying to acquire upstream and downstream frequencies.
Solid On Telephone line is registered successfully with the call manager.
Telephone Line LED Solid On MTA Voice interface is operational.
Blinking Telephone line has either gone off-hook or is in active call.
WPS Off There is no WPS activity.
Blinking WPS Process initialized (lasts for 2 minutes).
Battery LED Off Device is off, or AC power is on or Battery is not installed.
Blinking Battery needs replacement.
Solid On On Battery Power

The following buttons are located on the front panel of the modem.

  • Reset button - Press the Reset button to reset the box. Press the Reset button approximately 12-13 seconds to restore to factory settings.
  • WPS button - The LED blinks when the WPS button is pressed. It will blink for 2 minutes or until the wireless client Wi-Fi is connected to the gateway, whichever is earlier. The LED turns solid white for two minutes then turns off.

    Image of CGA4131 WPS Button

Manufacturer Resources

For more detailed information on the Technicolor CGA4131, refer to the User Guide (PDF).

New MyAccount

Cox Business MyAccount Updates

With the new and improved MyAccount portal from Cox Business, you’re in control. Included with your Cox Business services, it’s all right at your fingertips anytime, anywhere. 


  • Perform a health check on your services and reset your equipment
  • Easily configure key features and settings like voicemail and call forwarding
  • View your balance and schedule payments

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