Fraud Crime Hazard Prevention Act Article 21
When entering into international roaming service agreements with offshore telecom businesses, telecom businesses shall comply with the principles of equality and mutual benefits and relevant requirements of laws and regulations in Taiwan.After the competent telecom authority or judiciary police department notifies of the suspected violation of laws and regulations in Taiwan of particular telecom services provided by particular offshore telecom businesses, telecom businesses may not provide international roaming services of particular numbers or number sections for the particular user numbers of particular telecom services or the International Mobile Subscriber Identity (IMSI).
中文原文 詐欺犯罪危害防制條例第21條
電信事業與境外電信事業簽訂國際漫遊服務協議時，應遵守平等互惠原則及我國法令之相關規定。
電信事業經電信主管機關或司法警察機關通知特定境外電信事業所提供之特定電信服務，有違反我國法令之虞者，不得提供對應該特定電信服務之特定用戶號碼或國際行動用戶識別碼（InternationalMobileSubscriberIdentity,IMSI）特定號碼或碼段之國際漫遊服務。
電信事業經電信主管機關或司法警察機關通知特定境外電信事業所提供之特定電信服務，有違反我國法令之虞者，不得提供對應該特定電信服務之特定用戶號碼或國際行動用戶識別碼（InternationalMobileSubscriberIdentity,IMSI）特定號碼或碼段之國際漫遊服務。