Calix C844G modem user guide

Certified Brightspeed modem

Download the Calix 844G info sheet

Features of the Calix C844G

WiFi supported:

2.4 GHz: 802.11 b/g/n
5 GHz: 802.11 ac (WiFi 5)

IP compatibility: IPv4, IPv6

Works with these Brightspeed internet services:

Fiber (GPON) – up to 940 Mbps

Note: Listed speeds reflect the maximum download speed the technology can deliver on Brightspeed services. In-home speeds may differ based on router setup, devices and other factors.

Modem troubleshooting tips

Did you know? If your internet connection is spotty or slow, the best place to start is rebooting your modem.
Still not running right? Check to see if you need to update the modem's firmware.

Download the latest firmware for the C844G

Tip: A different browser should work if the firmware link is broken (Chrome is known to have issues with this kind of link). Alternately, you can right-click the link, choose "copy link address," and then paste it into a new browser tab.

Quick setup

Manual network (WAN) setup

If instructed to do so by a technician, you may need to change the WAN settings on your modem manually. Visit the WAN setup page for step-by-step instructions on different WAN configurations, including PPPoE, IPoE and transparent bridging.

You can configure your WiFi network through your modem’s wireless settings. The Calix C844G router has 2.4 GHz and 5 GHz options for most wireless settings, with some exceptions noted below. Click on the options listed for details and step-by-step instructions.

Helpful WiFi topics

These instructions may also apply when trying to connect select TVs, computers and other devices to your router's WiFi network.

If you are trying to connect a device to your router that happens to contain "special characters" in the device name, you will need to adjust the modem settings. Follow the steps below before completing the device connection.

1. Open a web browser and type in http://192.168.0.1 to go to your modem user interface (GUI).

2. Log in using the "Admin Username" and "Admin Password" shown on the modem's label.

3. Select the Advanced Setup section in the main menu.

4. In the left sidebar, select "DHCP Settings" under the LAN Settings section.

5. Scroll down to item #4 and select "Allow Special Characters."

6. Click "Apply" to save your changes.

The modem status area of the user interface allows you to view several options and check how your modem is running.

Connection status
DSL1 or DSL2 status
Internet status
Ethernet status
Wireless status (find best channel)
View IPv6 address

Firewall status
Device table
NAT table
Routing table
Resource table

The utilities menu gives you access to additional tools to help you manage and test your modem.

Reboot
Restore defaults
Upgrade firmware
Ping test
Traceroute
Configuration backup

Wireless diagnostics
Diagnostic test
Web activity log
System log
Firewall log
Time zone

Advanced settings give you even more control over your modem's configuration. Most of these are best for tech-savvy folks who are familiar with modems and networking.