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Support & Technical Documentation

Can I use my existing modem or router with Crazytel?

General documentation and configuration reference.

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General Updated 12 Nov 2026 3 min read 345 views
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Crazytel NBN: most Telstra, Optus, TPG, iiNet and Vodafone modems work for internet with WAN set to Dynamic IP (IPoE), no username or password, no VLAN. Old modem phone ports stay locked.

NBN byo router ipoe modem router telstra modem tpg modem

Can I use my existing modem or router with Crazytel?

Usually yes for Crazytel NBN internet: most Telstra, Optus, TPG, iiNet, Vodafone and Aussie Broadband modems and routers work once the internet (WAN) setting is Dynamic IP / IPoE with no username or password and no VLAN. The phone ports on another provider's modem stay locked to that provider, so Crazytel phone calls need an IP phone, an ATA or the CrazyPhone app.

Crazytel NBN internet settings

| Setting | Value |

|---|---|

| WAN / connection type | Dynamic IP, Automatic IP, DHCP or IPoE |

| Username and password | None - Crazytel NBN does not use PPPoE |

| VLAN | Off (untagged) - no VLAN 2, VLAN 100 or any other ID |

If your router asks for a username and password, it is set to PPPoE. Change it to Dynamic IP.

Which port do I plug into?

  • FTTP, HFC, FTTC and Fixed Wireless: an Ethernet cable from the NBN box's UNI-D port (usually UNI-D 1) to your router's WAN or Internet port, not a LAN port.
  • FTTN and FTTB: there is no NBN box. A phone cable goes from the wall socket to the DSL port of a VDSL2 modem-router set to VDSL2 and Dynamic IP. Ethernet-only and mesh routers (eero, Google Nest Wifi, Orbi, UniFi) need a VDSL2 modem in front of them.
  • 2000 Mbps plans: use a router with a 2.5 Gbps (or faster) WAN port and Cat6 cable.

Reusing a modem from another provider

| Previous provider | What to change |

|---|---|

| TPG, iiNet, Internode, Westnet | Change WAN from PPPoE to Dynamic IP, remove the username and password, and turn VLAN tagging off if it is on |

| Vodafone | Change WAN from PPPoE to Dynamic IP and remove the username and password |

| Telstra Smart Modem | Usually works as it is (it already uses Dynamic IP without a VLAN) |

| Optus Ultra WiFi modem | Usually works; check WAN is Automatic IP with VLAN off |

| Aussie Broadband | Usually works as it is |

After changing settings, switch the NBN box and the router off and on again. Some provider firmware locks the WAN settings; if yours cannot be changed, use an unlocked router. 4G backup on another provider's modem will not work with Crazytel.

Can I use the phone ports on my old modem for Crazytel calls?

No. The phone (voice) ports on Telstra, Optus, Vodafone and other provider-supplied modems are locked to that provider. For Crazytel phone service use an IP phone, an ATA such as a Grandstream HT801, or the CrazyPhone app.

Need a hand?

Ask Ringo with your router's make and model for step-by-step menus, or call 1800 272 998.

Need Help?