在家工作寬頻需求指南 | Work From Home Broadband Guide

自從疫情之後，在家工作（Work From Home）已經成為香港好多公司嘅常態。無論你係全職遙距工作、混合辦公模式、定係自由工作者（Freelancer），一條穩定高速嘅寬頻線路已經唔再係「有就好」，而係直接影響你工作效率同專業形象嘅關鍵基礎設施。

Since the pandemic, working from home has become a standard practice for many companies in Hong Kong. Whether you are fully remote, on a hybrid schedule, or freelancing, a stable and fast broadband connection is no longer a luxury — it is critical infrastructure that directly impacts your productivity and professional image.

呢篇指南會詳細分析 WFH 對寬頻嘅各種需求，由視像會議嘅最低速度要求，到 VPN 連接、上載速度、路由器設定，以至後備網絡方案，幫你做出最明智嘅選擇。This guide provides a comprehensive analysis of WFH broadband requirements — from minimum speeds for video conferencing to VPN considerations, upload speeds, router setup, and backup internet options.

視像會議速度需求 Video Conferencing Speed Requirements

視像會議係在家工作最核心嘅應用。無論你用 Zoom、Microsoft Teams 定係 Google Meet，每個平台對網絡速度都有特定嘅最低要求。以下係各平台嘅詳細建議：

Video conferencing is the most critical application for remote work. Whether you use Zoom, Microsoft Teams, or Google Meet, each platform has specific minimum network requirements. Here are the detailed recommendations:

Zoom 視像會議

Microsoft Teams

Google Meet

雖然以上數字睇落好似唔大，但要留意嘅係呢啲係「最低要求」。實際使用時，你嘅網絡需要同時處理多種任務 — 例如開住會議同時上載檔案、瀏覽網頁或者同步雲端文件。因此，建議預留至少 3-5 倍嘅最低需求作為緩衝。

While these numbers may seem modest, remember these are bare minimums. In practice, your connection must handle multiple simultaneous tasks — video meetings while uploading files, browsing the web, or syncing cloud documents. We recommend provisioning at least 3-5 times the minimum requirement as a buffer.

VPN 連接考慮 VPN Connection Considerations

大部分企業要求在家工作嘅員工透過 VPN（Virtual Private Network，虛擬私人網絡）連接公司內部網絡。VPN 會加密你所有嘅網絡流量，但同時會帶來額外嘅開銷（overhead），通常會令你嘅實際可用速度降低 10-30%。

Most enterprises require WFH employees to connect to the corporate network via VPN. VPN encrypts all your network traffic, but also introduces overhead that typically reduces your usable speed by 10-30%.

VPN 對速度嘅影響 Impact on Speed

如果你嘅公司用 Full Tunnel VPN（所有流量經 VPN 傳輸），速度損耗會更加明顯，因為連睇 YouTube 或者瀏覽一般網頁都要經公司嘅伺服器繞行。相反，Split Tunnel VPN 只會將公司相關嘅流量經 VPN，其餘流量直接走你嘅本地網絡，速度影響較小。

If your company uses Full Tunnel VPN (all traffic routed through VPN), the speed loss is more pronounced since even YouTube and general web browsing must pass through corporate servers. In contrast, Split Tunnel VPN only routes company-related traffic through VPN, while the rest uses your local connection directly — resulting in less speed impact.

上載速度嘅重要性 The Importance of Upload Speed

一般家庭用戶可能只關注下載速度，但在家工作嘅你，上載速度同樣甚至更加重要。原因好簡單：視像會議時你嘅鏡頭畫面需要「上載」畀其他參與者，分享螢幕需要上載你嘅畫面，傳送檔案去公司伺服器或者雲端（Google Drive、OneDrive、Dropbox）都係上載操作。

Regular home users may only care about download speed, but for WFH professionals, upload speed is equally if not more important. The reason is straightforward: your camera feed during video calls needs to be "uploaded" to other participants, screen sharing uploads your display, and sending files to company servers or cloud storage (Google Drive, OneDrive, Dropbox) are all upload operations.

好消息係，香港嘅光纖寬頻大部分都係對稱式（Symmetric），即上載速度同下載速度相同。例如 1000Mbps 光纖寬頻，上下載都係 1000Mbps。但如果你用緊舊式嘅 VDSL 或者 FTTB 方案，上載速度可能只有下載嘅一半甚至更少，呢種情況對在家工作會有明顯影響。

The good news is that most fibre broadband plans in Hong Kong are symmetric — meaning upload and download speeds are identical. A 1000Mbps fibre plan gives you 1000Mbps in both directions. However, if you are on an older VDSL or FTTB plan, upload speeds may be half or less of the download speed, which can significantly impact WFH performance.

獨立線路 vs 共用家庭寬頻 Dedicated Line vs Shared Family Broadband

如果你屋企得你一個人用寬頻，基本上唔需要擔心呢個問題。但係現實中，大部分家庭都有其他成員同時使用網絡 — 小朋友上網課、其他人睇 Netflix 4K、打機等等，呢啲都會搶佔你嘅頻寬。

If you are the sole user at home, bandwidth contention is not a concern. But in reality, most households have multiple members using the internet simultaneously — children attending online classes, others streaming Netflix in 4K, gaming, and more. All of these compete for your bandwidth.

共用寬頻嘅頻寬分配 Bandwidth Allocation on Shared Connections

一條 1Gbps 寬頻看似充裕，但當全屋 4-5 人同時使用高頻寬應用時，每人實際可用嘅頻寬可能只有 200-250Mbps。更關鍵嘅係，普通路由器通常係「先到先得」模式分配頻寬，唔會優先照顧你嘅工作需要。

A 1Gbps connection may seem ample, but when 4-5 family members are simultaneously running high-bandwidth applications, each person's effective bandwidth may drop to just 200-250Mbps. More critically, standard routers allocate bandwidth on a "first come, first served" basis without prioritising your work traffic.

解決方案 Solutions

方案一：升級至更高速度 Upgrade speed — 如果全家共用，建議至少選擇 2Gbps 方案。香港 CMHK 2G 方案月費 $138 起，性價比相當高。

方案二：拉第二條獨立線 Install a second dedicated line — 部分對工作要求極高嘅專業人士，會額外安裝一條獨立寬頻專線用於工作。月費大約 $100-150 就可以有一條 1Gbps 獨立線路，確保工作唔受家人使用影響。

方案三：使用 QoS 路由器 Use a QoS-capable router — 支援 QoS（Quality of Service）嘅路由器可以設定流量優先級，將視像會議和 VPN 流量設為最高優先。呢個係成本最低但效果顯著嘅方案。

後備網絡方案：5G 家居寬頻 Backup Internet: 5G Home Broadband

在家工作最怕嘅就係斷網。當你開緊重要會議或者趕 deadline 時，寬頻突然中斷可以造成嚴重嘅工作損失。因此，認真嘅 WFH 工作者應該有後備網絡方案。

The biggest fear for WFH professionals is losing internet connection. When you are in the middle of an important meeting or racing to meet a deadline, a sudden broadband outage can cause serious work disruption. Therefore, serious remote workers should have a backup internet plan.

5G 家居寬頻作為後備 5G Home Broadband as Backup

5G 家居寬頻係最佳嘅後備選擇。佢唔使拉線、即插即用，而且 5G 網絡嘅速度通常可以達到 100-500Mbps，足以應付視像會議和一般工作需要。香港幾大電訊商都有提供 5G 家居寬頻方案：

手機熱點作為應急 Mobile Hotspot as Emergency Backup

如果唔想額外花費，你嘅手機 4G/5G 數據都可以作為應急方案。但要留意數據用量 — 一個鐘頭嘅高清視像會議大約消耗 1-2GB 數據。建議確保你嘅手機月費計劃有充足嘅數據容量，或者購買一張專門嘅後備 SIM 卡。

If you prefer not to spend extra, your phone's 4G/5G data can serve as an emergency backup. But be mindful of data consumption — one hour of HD video conferencing uses approximately 1-2GB. Ensure your mobile plan has sufficient data allowance, or consider purchasing a dedicated backup SIM card.

最佳路由器設定 Optimal Router Setup for WFH

好多人裝咗高速寬頻但依然覺得網速慢，問題往往出喺路由器。ISP 提供嘅免費路由器通常功能陽春，效能有限。對於在家工作嘅你，以下係幾個重要嘅路由器設定建議：

Many people subscribe to high-speed broadband yet still experience slow connections — the problem often lies with the router. ISP-provided routers are typically basic with limited performance. Here are crucial router setup recommendations for WFH professionals:

1. 盡量使用有線連接 Use Wired Connection When Possible

Wi-Fi 再快都比唔上有線連接穩定。如果你有固定嘅工作位置，強烈建議用 Cat 6 或以上嘅網線直接連接電腦同路由器。有線連接嘅延遲通常低於 1ms，而 Wi-Fi 延遲可以高達 5-20ms 甚至更多，尤其係同時多人用 Wi-Fi 時。No matter how fast your Wi-Fi is, a wired connection is always more stable. If you have a fixed workspace, use a Cat 6 or higher ethernet cable to connect your computer directly to the router.

2. 選擇 Wi-Fi 6/6E 路由器 Choose Wi-Fi 6/6E Router

如果一定要用 Wi-Fi，請確保你嘅路由器支援 Wi-Fi 6（802.11ax）或更新嘅 Wi-Fi 6E/Wi-Fi 7。Wi-Fi 6 嘅 OFDMA 和 MU-MIMO 技術可以更有效率地同時服務多個裝置，減少在多裝置環境下嘅延遲。推薦品牌包括 ASUS、TP-Link、Netgear 等。

3. 啟用 QoS 設定 Enable QoS Settings

QoS（Quality of Service）可以讓你設定流量優先級。將 Zoom、Teams 等視像會議應用設為高優先級，確保即使其他人同時下載大型檔案或串流影片，你嘅視像會議質素都唔會受影響。QoS lets you set traffic priorities. Assign video conferencing apps like Zoom and Teams as high priority so your call quality remains unaffected even when others are downloading large files or streaming.

4. 大單位考慮 Mesh Wi-Fi 系統 Consider Mesh Wi-Fi for Larger Homes

如果你嘅工作空間距離路由器較遠，或者住所面積較大（700 呎以上），建議使用 Mesh Wi-Fi 系統。Mesh 系統由多個節點組成，可以確保全屋覆蓋，消除死角。常見選擇包括 TP-Link Deco、ASUS ZenWiFi、Google Nest Wifi 等。If your workspace is far from the router or your home is larger (over 700 sq ft), consider a Mesh Wi-Fi system for full coverage with no dead zones.

降低視像通話延遲 Reducing Latency for Video Calls

延遲（Latency）係指數據從你嘅電腦傳到對方再返回嘅時間。高延遲會導致視像會議出現「你講完我先聽到」嘅尷尬情況，嚴重影響溝通效率。

Latency refers to the time it takes for data to travel from your computer to the recipient and back. High latency causes the awkward "I hear you after you finish speaking" phenomenon in video calls, severely impacting communication efficiency.

一般嚟講，香港本地光纖寬頻嘅延遲非常低，通常在 1-5ms 之間。但如果你連接海外伺服器（例如美國公司嘅 VPN），延遲會因物理距離而大幅增加至 150-250ms，呢個係無法避免嘅物理限制。

ISP 穩定性推薦 ISP Reliability Recommendations

對於在家工作，穩定性比最高速度更加重要。以下係根據網絡穩定性、客戶服務和維修回應速度嘅綜合評估：

For WFH purposes, stability matters more than peak speed. Here is an overall assessment based on network reliability, customer service, and repair response time:

HKT / PCCW 香港電訊

作為香港最大嘅固網供應商，HKT 擁有最廣泛嘅光纖覆蓋和最成熟嘅網絡基建。穩定性方面評價最高，故障維修回應速度快。缺點係價格通常較高，2.5G 方案月費 $228 起。但對於需要最高穩定性嘅專業人士，HKT 係最穩陣嘅選擇。As the largest fixed-line provider in HK, HKT has the most extensive fibre coverage and mature infrastructure. Rated highest for stability with fast fault repair response. The downside is higher pricing, but for professionals demanding maximum reliability, HKT is the safest choice.

HKBN 香港寬頻

HKBN 嘅光纖網絡同樣非常穩定，而且定價較 HKT 稍低（2.5G 月費 $229 起）。佢嘅商業客戶服務質素優良，故障處理效率高。對於在家工作嘅用戶，HKBN 嘅性價比非常好。HKBN's fibre network is equally stable, with slightly lower pricing than HKT. Their business customer service quality is excellent with efficient fault handling. HKBN offers great value for WFH users.

CMHK 中國移動香港

CMHK 嘅光纖寬頻主要使用 HGC 嘅網絡基建，穩定性表現良好。最大優勢係價格極具競爭力 — 1G 月費只需 $108，2G 月費 $138。如果你嘅預算有限但又需要高速寬頻，CMHK 係非常好嘅選擇。CMHK fibre broadband primarily uses HGC infrastructure with good stability. Its biggest advantage is highly competitive pricing — 1G at just $108/month, 2G at $138/month.

HGC 環電

HGC 擁有自己嘅光纖網絡基建，覆蓋範圍不及 HKT 廣泛但穩定性優良。1G 方案月費 $109 起，性價比高。特別適合商業區附近嘅住宅用戶。HGC has its own fibre infrastructure with excellent stability, though coverage is not as extensive as HKT. 1G plans start at $109/month with good value.

WFH 寬頻選擇總結 Summary: Choosing the Right WFH Broadband

最後，在家工作嘅寬頻需求因人而異。如果你主要係文字處理和電郵往來，100Mbps 已經綽綽有餘。但如果你需要頻繁進行視像會議、傳輸大型檔案、使用 VPN 連接海外伺服器，1Gbps 或以上嘅光纖寬頻加上適當嘅路由器設定，先至可以確保你嘅工作效率唔會被網絡問題拖累。

Ultimately, WFH broadband requirements vary by individual. If your work is primarily text-based with emails, 100Mbps is more than sufficient. But if you frequently video conference, transfer large files, and connect to overseas servers via VPN, a 1Gbps or higher fibre plan with proper router configuration is essential to ensure your productivity is not hampered by network issues.

投資一條好嘅寬頻線路，就係投資你嘅職業生涯。唔好因為每個月慳幾十蚊而影響你嘅工作表現和專業形象。Investing in a quality broadband connection is investing in your career. Do not let saving a few dollars per month compromise your work performance and professional image.