Case Studies案例研究 / Latest Case最新案例 Everything Was There Except the Power Adapters: Getting a Flat Online the Same Afternoon With a Borrowed Supply (ABB 100M, Eastgardens)
什么都在，就是少了两根电源线：靠一个借来的适配器当天下午就通网（ABB 100兆，Eastgardens）
On-site · Eastgardens上门 · EastgardensAussie Broadband (ABB)Aussie Broadband（ABB）100 Mbps plan100兆套餐TP-Link routerTP-Link路由器ONT and router power leads missing光猫与路由器电源线都不在Ordered and online the same afternoon当天下午开通并联网
Nothing was broken in this flat. The ONT was on the wall, the router was on the shelf, the line was fine and the address was serviceable. The whole job came down to two power leads the previous tenant had taken with them — the cheapest items in the entire chain, and the ones that stop everything.
这套房子里没有任何东西是坏的。光猫在墙上、路由器在架子上、线路正常、地址也能开通。整件事卡在前租客顺手带走的两根电源线上——整条链路里最便宜的东西，偏偏也是能让所有东西一起停摆的东西。
A power adapter is not a generic object
电源适配器不是一个通用件
The customer had been to shops and come back without one, and that is not bad luck. A power adapter has to match on more than the plug shape: the voltage has to be right and the current rating has to be at least what the device draws. Get the voltage wrong and you can damage the equipment; get the current rating too low and it either will not run or will misbehave in ways that look like a network fault rather than a power fault.
That is why we checked the output rating on our spare before bringing it, rather than turning up with a box of adapters and trying them. The rating is printed on the ONT and on the adapter. It is a thirty-second check that decides whether the afternoon works.
The number to write down when you move in is the one on the label of the device, not the one on the lead you currently have.
客户跑了店没买到，这不是运气不好。电源适配器要匹配的不只是插头形状：电压必须对，电流规格至少要达到设备的需求。电压不对可能把设备烧掉；电流规格不够，设备要么起不来，要么工作不正常——而那种不正常看起来往往像网络故障，不像供电问题。
这也是为什么我们是先核对了备用适配器的输出参数才带过去，而不是拎一箱适配器上门一个个试。参数就印在光猫上和适配器上，看一眼三十秒，却决定了这个下午成不成。
搬进去时该记下来的那个数字，是设备标签上的那个，不是你手上现有那根线上的那个。
Nothing faulty, two things absent没有一样是坏的，只是少了两样
ABB serviceABB宽带服务
not ordered yet / 尚未开通
→
ONT光猫
no power lead / 缺电源线
Missing缺失
→
TP-Link routerTP-Link路由器
no power lead, no cable / 缺电源线和网线
Missing缺失
→
WiFi无线网络
nothing to serve / 无从谈起
This is what makes missing-accessory faults so frustrating: there is no diagnosis to perform and no skill required, and yet you are as offline as you would be with a snapped fibre. The customer had already been to several shops. The scarce thing is not the part, it is knowing which specification you need and which of these items somebody else is obliged to replace for free.「缺配件」这类故障之所以特别让人窝火，原因就在这里：没有什么可诊断的，也不需要什么技术，但你没网的程度，和光纤断掉是一样的。客户已经跑了好几家店。稀缺的不是那个零件本身，而是「你需要哪个规格」以及「这几样东西里哪一样别人有义务免费换给你」。
Which missing items are somebody else's problem
缺的东西里，哪几样是别人该负责的
This distinction saves people real money and time, and almost nobody moving into a flat knows it.
The ONT — the box the fibre or the line terminates on — generally belongs to the network, not to you or your landlord. When one has been removed or damaged through no fault of the occupant, replacement is usually handled without charge, though it does depend on the circumstances. So if the box itself is gone, the first move is to ask, not to shop.
The router is a different matter: unless your provider supplied it, it is yours, and so is its power lead. Network cables are yours too, and they cost almost nothing — buy a spare and keep it in a drawer, because a missing cable is the single most annoying way to have no internet.
这个区分能实实在在省下钱和时间，而刚搬进公寓的人几乎都不知道。
光猫——也就是光纤或线路终结在上面的那个盒子——通常属于网络一侧，不属于你，也不属于房东。如果它是在非住户原因下被拆走或损坏的，更换一般是不收费处理的，不过也要看具体情况。所以如果盒子本身不见了，第一步是去问，不是去买。
路由器是另一回事：除非是运营商发给你的，否则它是你自己的，它的电源线也是。网线同样是自己的，而且几乎不要钱——多买一根扔抽屉里，因为「就差一根网线」是所有没网的理由里最让人上火的一种。
From first message to online从第一条消息到联网成功
1
Customer described what was missing客户说明缺了哪些东西
ONT lead, router lead, network cable光猫电源、路由器电源、网线
2
They had already tried local shops客户已经线下问过几家店
No matching adapter found没买到匹配的适配器
3
Guided them through ordering ABB指导其提交ABB宽带开通
Came through in under ten minutes不到十分钟就开通了
4
Checked our spare adapter's output rating核对我们备用适配器的输出参数
Matched the ONT's requirement与光猫要求匹配
5
Brought it over the same afternoon当天下午带过去
Lend now, return at UNSW later先借用，之后在UNSW还
6
Powered the ONT给光猫接上电源
Lights came up指示灯正常亮起
7
Connected and configured the router接上路由器并配置联网
Online联网成功
8
Speed tested both routers, set SSID and password两台路由器分别测速，改WiFi名称和密码
Full 100 Mbps on the better one较好的那台跑满100兆
Two routers on the same line, two different results
同一条线，两台路由器，两个结果
Once the flat was online we tested both routers the customer had, and the gap between them was the second lesson of the afternoon.
One of them had modest performance and no 5 GHz band at all, and its speed test was correspondingly disappointing. The other reached the full 100 Mbps of the plan over 5 GHz wireless. Same line, same plan, same room, same phone doing the testing — the only thing that changed was which box the traffic went through.
This is worth knowing before you conclude that a new connection is underperforming. A 2.4 GHz-only router in a modern block is sharing a crowded band with every neighbour, and it will hold you well below a plan you are paying for. If a new service tests slowly, test again through a different router before you call anyone.
屋里通网之后，我们把客户手上的两台路由器都测了一遍，两者之间的差距是这个下午的第二个知识点。
其中一台性能一般，而且根本没有 5G 频段，测速结果也就相应地不理想。另一台走 5G 无线，直接跑满了套餐的 100 兆。同一条线、同一个套餐、同一个房间、同一台手机测——唯一变的只是流量从哪个盒子里过。
这一点值得在你断定「新开的网不达标」之前先知道。一台只有 2.4G 的路由器，在现代公寓楼里是和所有邻居挤在同一个拥挤频段上的，它会把你死死压在你正在付钱的那个套餐之下。新服务测速偏慢的话，先换一台路由器再测一遍，然后再去找人。
What each router could actually deliver on the 100 Mbps plan同一条100兆的线，两台路由器各能跑出多少
Older router, 2.4 GHz only较旧的那台，只有2.4G
Better router, over 5 GHz较好的那台，走5G频段
100Mbps — the plan’s ceiling, reached wirelessly once the right router was used.兆——套餐的上限，换用合适的那台路由器后，无线就能跑满。
What is missing, and who replaces it缺的是什么，该找谁补
| Typically replaced free通常可以免费更换 | You buy it yourself通常自己买 |
|---|
| The ONT / NBN box itself光猫 / NBN盒子本体 | Usually, if it was not damaged by the occupant一般可以，只要不是住户人为损坏 | —— |
| Its power adapter它的电源适配器 | Ask — sometimes supplied with the box值得问，有时会随盒子一起给 | Often faster to buy a matching one自己买一个匹配的通常更快 |
| The router路由器 | —— | Yours, unless the provider supplied it你自己的，除非是运营商发的 |
| The router's power adapter路由器的电源适配器 | —— | Yours — match the output rating自己买，注意输出参数要匹配 |
| Network cables网线 | —— | Yours — cheap, buy a spare自己买，很便宜，多备一根 |
What to take from this one
这一单值得记住的几点
- On move-in day, check the comms cupboard for the ONT, its power lead, the router, its power lead and at least one network cable. Five items, one minute.
- Photograph the label on the ONT. The voltage and current rating on it is what you need if the adapter has walked off.
- If the ONT or NBN box itself is missing, ask before you buy — replacement is often handled free when it was not the occupant's doing.
- Power adapters must match on voltage and be rated for at least the current the device draws. The plug fitting means nothing.
- Order the broadband before you need it. This one came through in under ten minutes, but that is the part you cannot count on.
- Before deciding a new connection is slow, test through a different router. A 2.4 GHz-only unit will not deliver a 100 Mbps plan in an apartment block.
- 搬进去当天，把弱电箱里的这五样点一遍：光猫、光猫电源、路由器、路由器电源、至少一根网线。五样东西，一分钟。
- 把光猫上的标签拍下来。适配器要是不见了，你需要的就是上面那组电压和电流参数。
- 如果光猫/NBN盒子本身不见了，先问再买——非住户原因造成的，往往可以免费更换。
- 电源适配器必须电压一致、电流规格不低于设备需求。插头插得进去，什么都说明不了。
- 宽带要提前开。这一单不到十分钟就开通了，但这恰恰是最不能指望的一环。
- 断定新开的网慢之前，换一台路由器再测。只有2.4G的机器，在公寓楼里是跑不出100兆套餐的。
Result最终结果
The ABB order went through in under ten minutes, and a spare adapter with a matching output rating brought the ONT up the same afternoon — lent for the customer to return at UNSW once their own arrived. The router was configured and online, the better of the customer's two routers reached the full 100 Mbps of the plan over 5 GHz wireless, and the WiFi name and password were set to what they wanted before we left. Nothing in the flat had been faulty.
ABB 的开通申请不到十分钟就下来了，一个输出参数匹配的备用适配器让光猫在当天下午亮了灯——先借给客户用，等他自己买的到货后在 UNSW 还回来即可。路由器配置完成并联网，客户两台路由器里较好的那台走 5G 无线跑满了套餐的 100 兆，离开前把 WiFi 名称和密码也按他的要求改好。这套房子里本来就没有一样东西是坏的。