Administrative Regulations for Number Portability Services of Telecommunications Enterprises Article 25

The Originating Operator shall bear its own additional communication costs or Ported Subscriber Database query costs incurred in the provision of communications services for the subscribers receiving the telecommunication.
中文原文 電信事業號碼可攜服務管理辦法第25條
發信經營者為提供通信服務至受信攜碼用戶所生之額外通信成本或攜碼用戶資料庫查詢成本,應自行負擔之。

English translation for reference only; the Chinese text prevails. Not legal advice.