Case Studies案例研究 / Latest Case最新案例 Living-Room Wall Ethernet Port Activated for a Gaming PC in a Sydney CBD Apartment (Occom)
悉尼CBD公寓：找对客厅墙上网口，游戏台式机改有线直连（Occom）
Student · Sydney CBD学生 · 悉尼CBDOccom planOccom 运营商ASUS router华硕路由器Wall Ethernet port墙上网口Gaming PC wired游戏台式机改有线Ping ~5 ms in game游戏延迟 ~5毫秒
A student in a Sydney CBD apartment (the Greenland building) on an Occom plan wanted one thing: the gaming desktop in the living room running off the living-room wall Ethernet port instead of WiFi, to cut latency. The catch with wall ports is that they come in pairs — one socket near the router, one across the home — and nothing tells you which feeds which. We tested the router-side ports first, matched the right pair with two cables, wired the desktop, and watched the game hold a ~5 ms ping for five minutes straight.
一位住在悉尼CBD（Greenland公寓楼）的同学用的是 Occom 宽带，诉求很单纯：让客厅的游戏台式机改用客厅墙上的网口、不再走 WiFi，把延迟打下来。墙上网口的麻烦在于它是“成对”的——路由器旁一个、客厅一头一个，但没有任何标识告诉你哪个对哪个。我们先测路由器端的网口，再用两根网线把正确的一对配上，接好台式机，现场开游戏实测五分钟，延迟稳定在约 5 毫秒。
How we matched the port on-site现场怎么一步步接通
1
Tested the router’s two spare LAN ports with a laptop笔记本先测路由器的两个空闲网口
Both ports confirmed live两个口都可用
2
Cabled both ends at once to match the wall-port pair两端同时接线，配对墙上网口
Living-room port identified找到客厅对应的口
3
Wired the gaming desktop to the wall port台式机网线接上墙口
Speed test passed on the spot现场测速通过
4
Five minutes of live gameplay at the desk现场开游戏实测五分钟
Ping held at ~5 ms延迟稳定在 ~5毫秒
Matching a wall port is a two-cable job. One cable links the socket at the router end; the other links the far socket to a test laptop. Only with both ends connected at the same time can you confirm which pair is which — and whether the in-wall run actually works.
- Most homes only have the single cable that came with the router, which is exactly why this test never gets done before we arrive.
- We carry spares: test the router-side ports first, then walk the wall pairs one by one.
- Once the right pair lights up, the desktop takes the wall port and WiFi is out of the latency path for good.
配对墙口是个“两根网线”的活：一根在路由器端把信号送进墙口，另一根在客厅端接测试笔记本。两头同时接上，才能确认哪个口对哪个口、以及墙内这段线到底通不通。
- 很多同学家里只有路由器自带的那一根网线，所以在我们上门之前，这个测试从来没被做过。
- 我们会带备用网线：先测路由器端的口，再逐对去配墙口。
- 配对成功后，台式机直接吃墙口，延迟路径里从此没有 WiFi。
Why a gaming desk wants the wall port, not WiFi
为什么游戏台式机要吃墙口、不吃 WiFi
WiFi vs wall-port wired · for a fixed gaming deskWiFi vs 墙口有线 · 固定游戏桌面
| WiFiWiFi | Wall-port wired墙口有线 |
|---|
| In-game ping游戏延迟 | Fluctuates with interference and load随干扰和负载波动 | ~5 ms and flat in this flat本例实测约5毫秒且稳定 |
| Stability稳定性 | Shares airtime with every phone and laptop和全屋手机笔记本抢空口 | A dedicated in-wall run to the router独享一段直达路由器的墙内线 |
| Interference干扰 | Walls, microwaves, neighbours’ WiFi隔墙、微波炉、邻居WiFi | None on a cable网线不受这些影响 |
| Best for适合 | Phones, tablets, sofa laptops手机、平板、沙发上的笔记本 | A desktop that never moves位置固定的台式机 |
For raw download speed, modern WiFi is usually fine. Latency is a different story: wireless airtime is shared, and one busy device or a noisy neighbouring channel shows up as ping spikes right when a fight starts. A wall port is a fixed cable run back to the router — this desktop stopped competing with every phone in the flat, and the player felt it in the first game.
论下载速度，现代 WiFi 通常够用；但延迟是另一回事——无线空口是共享的，一台设备忙起来、邻居信道吵起来，团战开打的那一刻就是 ping 突刺。墙口本质是一段直达路由器的固定线路：台式机不再和全屋手机抢信号，上手第一把就能感觉出来。
Same afternoon, another flat: every wall socket dead
同一个下午的另一家：墙口全都没信号
Where that second job stopped · the weakest link第二单卡在哪 · 最弱的一环
Street line街道进线
ISP to test待运营商测
→
In-wall cabling墙内布线
dead不通
Bottleneck瓶颈
→
Wall sockets ×33处墙口
no sync无信号
→
DSL light, 2 routers两台路由器DSL灯
never lit都不亮
We tested three sockets and two different routers — the student’s TP-Link and our own unit — and no DSL light ever came on. That pattern puts the fault inside the walls, not in the gear: one for the ISP’s technician to re-terminate.三处墙口、两台路由器（同学的 TP-LINK 加我们自带的机器）全部试过，DSL 灯始终不亮。这个组合说明问题出在墙内线路，不在设备——需要运营商技师上门处理线路。
The second visit that afternoon was the opposite story: an urgent call-out where the student had already tried their own TP-Link on the socket and got no DSL light. We repeated the test with our router, then worked through the other two sockets in the flat — nothing would sync. That is as far as private gear can take it: when every socket is dead on known-good hardware, the line inside the walls or upstream needs the provider’s technician. We left the student with exactly what to tell the ISP so the booking lands on the right team.
- An active broadband account does not mean a working line — activation happens in the provider’s system, not in your walls.
- Seeing the router’s WiFi on your phone does not mean internet: the WiFi radio broadcasts even with no line at all.
同一下午的第二单是反面剧本：这位同学比较着急、希望当时就上门，他自己已经用 TP-LINK 试过墙口，DSL 灯不亮。我们用自带路由器复测，又把家里另外两处墙口全试了一遍——都没有信号。到这一步，私人设备能做的排查就到头了：已知正常的设备在每个墙口都点不亮，说明墙内或上游的线路需要运营商技师来处理。我们把该跟运营商说的报修话术留给了同学，让预约一次到位。
- 宽带账号开通了 ≠ 线路是通的——开通发生在运营商系统里，不发生在你家墙里。
- 手机能搜到路由器的 WiFi ≠ 有网：哪怕完全没有线路，路由器插电就会广播 WiFi。
Result最终结果
Two jobs, one afternoon. Job one: the living-room wall port was matched and the gaming desktop went wired — ~5 ms in-game ping, stable across a five-minute live test, no more WiFi in the path. Job two: three dead sockets on two routers proved the fault was in-wall, and the student left with a precise fault description for the ISP technician booking.
一个下午两单。第一单：客厅墙口配对成功，游戏台式机改有线——现场实测游戏延迟约 5 毫秒、五分钟稳定不跳，链路里不再有 WiFi。第二单：两台路由器×三处墙口全无信号，锁定墙内线路故障，同学拿着我们给的故障描述直接预约运营商技师。