Here are a few options for a WordPress post_tag description for “專線電話” (Dedicated Phone Line) in Traditional Chinese, ranging in formality and focus:

**Option 1: Concise and Informative**

* **Description:** 專指用於特定用途或部門的電話號碼，例如客戶服務、技術支援等。方便快捷，提供專門的通訊渠道。 (Specifically refers to phone numbers used for a particular purpose or department, such as customer service, technical support, etc. Convenient and quick, providing a dedicated communication channel.)

**Option 2: Focusing on Benefits**

* **Description:** 使用專線電話，使您能快速聯繫需要的服務或部門。減少等待時間，提高溝通效率，獲得更專業的支援。 (Using dedicated phone lines allows you to quickly contact the services or departments you need. Reduces waiting time, increases communication efficiency, and provides more professional support.)

**Option 3: For a Tech or Business context**

* **Description:** 專線電話是企業通訊的重要組成部分，確保重要的聯絡管道暢通無阻。適用於重要客戶、內部員工以及緊急情況。 (Dedicated phone lines are a critical part of business communications, ensuring that important contact channels are unobstructed. Suitable for key clients, internal employees, and emergency situations.)

**Option 4: Simple and Direct**

* **Description:** 用於特定服務或部門的專用電話號碼。 (Dedicated phone numbers used for specific services or departments.)

**Option 5: Emphasis on Specificity**

* **Description:** 專為特定業務目的而設置的電話，提供更直接、專注的聯繫方式。 (Phones set up specifically for a particular business purpose, providing a more direct and focused means of contact.)

**Which Option to Choose:**

The best option depends on the context of your website and the posts you’re tagging. Consider:

* **Your Audience:** Who are you writing for? (Casual readers? Business professionals?)
* **Your Website’s Focus:** What is the overall topic of your website?
* **Post Content:** What are the posts about? Are they reviews of phone services? Are they instructions on how to use a specific dedicated phone line?

You can adjust these descriptions further to perfectly suit your needs! Remember to keep it concise and relevant to the tag’s purpose.