Modem vs Router in Australia (vs China): Stop Getting Confused
中国 VS 澳洲的 modem/router 区别，别再被搞懵
Bought a new router and it won't connect? The word 'modem' means something different here. Two minutes to clear it up for good — and to know whether you need a modem-router or just a router.
买了新路由器却连不上网？「modem」这个词在这里意思不一样。两分钟一次讲清——并搞懂你需要 modem-router 还是只要路由器。
'Connect your modem' — but which box?「connect your modem」——到底哪个盒子？
Support says ‘connect your modem,’ but you only see a light-converter box; or you buy a shiny new router and it won't get online. It's not your English — China and Australia mean different things by the word ‘modem’. Clear this up once and a lot of setup confusion disappears.
客服让你「connect your modem」，你只接了个光猫；或者买了台漂亮新 router 却连不上网。不是你英文不好——中澳对 「modem」这个词的理解根本不一样。一次讲清，很多配置上的困惑就没了。
China: separate boxes中国：分离式结构
Typical home chain: 光猫 (Modem) → Router → devices. The 光猫 converts the signal (optical ↔ electrical) and does not do WiFi. So in Chinese usage, ‘Modem’ basically means the 光猫, and it's clearly a separate physical box from the Router.
典型家庭链路：光猫（Modem）→ 路由器（Router）→ 终端设备。光猫负责信号转换（光↔电），不负责无线分发。所以中文语境里「Modem」几乎就等于「光猫」，和 Router 是清楚分开的两个物理设备。
Australia: often one combined box澳洲：常是一体机
Because some NBN types (FTTB, VDSL, ADSL) need a device that plugs straight into the phone line (RJ11) and does the modulation, vendors sell ‘Modem Routers’ (e.g. ASUS DSL-AC68U, TP-Link Archer VR2100v) that do both modem and WiFi in one. So Australians call the whole thing ‘the modem’. In practice, ‘modem’ here can mean:
- a pure modem (rare);
- a combined modem-router (the common case);
- or loosely just ‘the box the ISP sent’ — whatever its internals.
One line to remember: in China ‘modem’ = the 光猫 that converts signal; in Australia ‘modem’ often = the all-in-one box that also does your WiFi.
因为部分 NBN 类型（FTTB、VDSL、ADSL）需要能直接插电话线（RJ11）并完成调制解调的设备，厂商就推出「Modem Router」一体机（如 ASUS DSL-AC68U、TP-Link Archer VR2100v），一台既能调制解调、又能发 WiFi。所以澳洲人把整台都叫「modem」。实际上，这里的「modem」可能指：
- 纯调制解调器（少见）；
- modem-router 一体机（主流情况）；
- 或泛指「ISP 寄来的那台盒子」——不管内部结构。
一句话记住：在中国「modem」=负责信号转换的光猫；在澳洲「modem」常常=那台还帮你发 WiFi 的一体机。
Which do I actually need?我到底需要哪个？
It depends on your connection type:
- FTTP / HFC: you have an NBN box that does the modem part — you just need a plain router (or router + mesh). A router-only device is fine.
- FTTN / FTTB (phone line): you need a modem-router that supports VDSL2 and plugs into the phone socket — a router-only device won't work, and a China 光猫 usually won't either.
- Not sure? Check your max speed on an ISP site (gigabit = fibre = router-only; 100M-max = DSL = modem-router). Full method: Can I use my Chinese router?
取决于你的接入类型：
- FTTP / HFC：你有个 NBN 盒子已经做了 modem 的活——你只需要一台普通路由器（或路由器+Mesh）。只带路由功能的设备就行。
- FTTN / FTTB（电话线）：你需要一台支持 VDSL2、能插电话口的 modem-router——只带路由功能的用不了，国内光猫通常也不行。
- 不确定？在 ISP 官网查最高速度（千兆=光纤=只要路由器；最高 100M=DSL=需 modem-router）。完整方法：国内路由器能不能用。
Frequently asked questions常见问题
What's the difference between a modem and a router?modem 和 router 有什么区别？+
A modem converts the signal between your line and your network; a router shares that connection to your devices over WiFi and Ethernet. In China they're usually separate boxes (光猫 + router). In Australia they're often combined into one 'modem-router', which is why people use 'modem' loosely for the whole box.
modem 负责在线路和你的网络之间转换信号；router 通过 WiFi 和网线把这个连接分给你的设备。中国通常是两个盒子（光猫+路由器）；澳洲常合成一台「modem-router」，所以大家用「modem」泛指整台。
Do I need a modem or just a router for the NBN?NBN 需要 modem 还是只要 router？+
On FTTP or HFC the NBN box handles the modem part, so a plain router is enough. On FTTN/FTTB (phone-line) you need a VDSL-capable modem-router. Check your address's max speed to tell which you're on.
FTTP 或 HFC 上 NBN 盒子已经做了 modem 的活，一台普通路由器就够。FTTN/FTTB（电话线）需要支持 VDSL 的 modem-router。查你地址的最高速度就能判断。
Still stuck? We fix this every day.
还是搞不定？这些我们每天都在修。
Message us your suburb and the issue — bilingual Chinese/English, same-day and 24-hour help across Sydney. Most replies come within minutes.
告诉我们你所在的区域和遇到的问题——中英双语、全悉尼当天/24 小时上门，大多数消息几分钟内回复。
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