Here are a few description options for the WordPress post tag “語音通話” in Traditional Chinese, ranging from concise to more descriptive:

**Option 1: Concise & Simple**

> 關於語音通話的所有資訊，包括功能、應用程式與相關技術。 (All information about voice calls, including features, applications, and related technologies.)

**Option 2: Slightly More Descriptive**

> 涵蓋語音通話相關文章，介紹不同通話選擇、應用程式和使用技巧。 (Covers articles related to voice calls, introducing different call options, applications, and usage tips.)

**Option 3: Focus on Practicality**

> 探索有關語音通話的指南、教學與最新消息。了解如何在各種裝置上進行語音通話，包括使用手機、電腦等。 (Explore guides, tutorials, and the latest news about voice calls. Learn how to make voice calls on various devices, including mobile phones, computers, etc.)

**Option 4: Tech-Focused**

> 深入了解語音通話技術，探討 VoIP、VoLTE、應用程式以及相關網路需求與最佳實踐。 (Delve into voice call technologies, exploring VoIP, VoLTE, applications, and related network requirements and best practices.)

**Option 5: Broad & Engaging**

> 想要了解語音通話的一切嗎？這個標籤收錄了各種與語音通話相關的內容，從免費的語音通話應用程式到通話品質優化技巧，讓你輕鬆掌握語音通話的使用與應用。 (Want to know everything about voice calls? This tag contains various content related to voice calls, from free voice call applications to tips for optimizing call quality, allowing you to easily master the use and application of voice calls.)

**Which option to choose depends on:**

* **Your blog’s overall tone & audience:** If you’re technical, go for option 4. If you’re aiming for general readers, opt for option 2, 3, or 5.
* **The type of content you usually post under this tag:** Consider the typical subjects of your posts tagged with “語音通話”.
* **Word limit:** WordPress tag descriptions often have a character limit. Choose the description that fits within the limit.

Before adding the description, you might want to add it to your test blog post (if you have one) to see how it appears in your theme and if it fits within your theme. Good luck!