Regulations for Administration on Type II Telecommunications Business Article 21

The operator who operating the Intra-corporation network communication service shall lease circuits from Type I Telecommunications Business to provide links between users and networks, and between intra-network joint points and shall not have the following acts:1. to provide communication service of Non Intra-corporation network communication service for its users; and2. to provide communication service of re-forward call of the call-terminating part for its users.
中文原文 第二類電信事業管理規則第21條
經營公司內部網路通信服務者,應向第一類電信事業租用專線,供作用戶與網路間及網路內部節點間連接之用,並不得有下列行為:
一、為其用戶提供非公司內部間之通信服務。
二、為其用戶提供受信端再轉接之通信服務。

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