Administrative Regulations for Number Portability Services of Telecommunications Enterprises Article 20
Except otherwise stipulated in Subparagraph 2, Paragraph 2 of Article 6, Operators shall deploy two sets of Ported Subscriber Database equipment and any other equipment necessary for exchanging Ported Subscriber information.
中文原文 電信事業號碼可攜服務管理辦法第20條
除有第六條第二項第二款規定情形者外，經營者應建置雙重之攜碼用戶資料庫設備及攜碼用戶資料交換所需相關設備。