Using your Zyxel C3510XZ modem

Recommended CenturyLink modem

Zyxel C3510XZ modem, front and back

Features of the Zyxel C3510XZ

  • WiFi 6 technology with dual-band 2.4 GHz and 5 GHz 802.11 ax (backwards compatible with 802.11 a/b/g/n/ac)
  • Auto channel selection
  • Up to 4 wireless networks (SSIDs)
  • WPS / WPS 2.0 compatible
  • IPv4 / IPv6 compatible
  • WPA2-PSK security

Works with these CenturyLink internet services:

  • Fiber (GPON) – up to 940 Mbps

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

NOTE: This router has the same specifications as the Greenwave C4000XG

Front and back details of the C3510XZ modem/router

Front and back diagram of Zyxel C3510XZ modem

Modem troubleshooting tips


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Installation and getting connected

This modem must be installed and set up by a technician to activate your internet service. Once the connection is established, you can start connecting devices to your home network.

The Network Settings menu gives you access to several options, listed below. Many of these are considered advanced options, which most users will not need to access for regular use. The most common options are shown in bold.

  • Broadband (this is where your tech will set up the WAN connection during installation)
  • Wireless
  • Home Networking
  • Routing
  • QoS (Quality of Service)
  • NAT (Network Address Translation)
  • DNS (Domain Name System)
  • IGMP/MLD
  • Vlan Group
  • Interface Grouping
Zyxel user interface - Network Settings menu

Helpful WiFi topics

The Security menu allows you to view settings to control access to your home network, including these options: 

  • Firewall
  • MAC Filter
  • Parental Control - see next section for details
  • Scheduler Rule
  • Certificates
Zyxel user interface - Security menu

Parental Control allows you to define users within your household and set limits on when they have access to the WiFi.

1. Start by using the slider button at the top to enable Parental Control. Blue means it is enabled; gray means it is disabled.

2. From here you can click "Add more profile" to create new user profiles for your family members. You can also turn existing profiles on or off with the slider, or select the arrow at the bottom to edit controls you have already created.

Zyxel user interface - Parental Control 1

3. To create a new profile, type the name of the user into the box on the left, and make sure the slider is blue to indicate "Active." Under "Profile Device List," you will be able to check and modify the list of devices that person uses. Then click "Next" to set up a schedule.

Zyxel user interface - Parental Control 2

4. Modify an existing schedule, or click "Add New Schedule." Then you can set hours and days that the user will be blocked from getting online. When you are finished, click "Save."

Zyxel user interface - Parental Control 3

Repeat these steps for each user you want to set controls on.

The System Monitor menu is similar to the "Modem Status" menu on some other modems. This  allows  you to see various logs and data related to the performance and operation of your modem/router, listed below:

  • Log
  • Traffic Status
  • ARP Table
  • Routing Table
  • Multicast Status
  • WLAN Station Status
Zyxel user interface - System Monitor menu

The Maintenance menu gives you a number of settings and actions that help keep your modem running well over time, including these options:

  • System
  • User Account
  • Remote Management
  • SNMP
  • Time (check that the system time is correct if you want to set up schedules  through parental controls)
  • E-mail Notification
  • Log Setting
  • Firmware Upgrade
  • Backup/Restore
  • Reboot
  • Diagnostic
Zyxel user interface - Maintenance menu

Setting up new service? Please note that a phone jack is required to set up CenturyLink internet service in your home. If you don't have a jack, chat with us to have one installed.

Introducing WiFi 6

Intel WiFi 6 Gig+ is the next generation in-home WiFi technology, designed for the ever-increasing demand of connected homes and gigabit connections. Compared to WiFi 5, it delivers:

  • Up to 3x the connectivity speed 
  • Up to 4x the data capacity 
  • Up to 75% less lag time (latency) for gaming and video applications

WiFi 6 also includes embedded cybersecurity, managed network services and parental controls. This feature is available with the Greenwave C4000 modem/router.

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