These Regulations are established in accordance with the stipulations of Paragraph 5, Article 16 of the Telecommunications Management Act（hereafter referred as the Act）.

For the purposes of the Regulations:
1. “Operators”: it refers to the Telecommunications enterprises who can provide Number Portability in accordance with these Regulations.
2. “Ported Subscribers”: it refers to the subscribers who switched their telecommunication enterprises through Number Portability.
3. “Recipient Operator”: it refers to the Telecommunications enterprises who have gained the Ported Subscriber in the provision of Number Portability.
4. “Donor Operator”: it refers to the Telecommunications enterprises who have lost the Ported Subscriber in the provision of Number Portability.
5. “Concentrated Databases”: it refers to the Databases administrated by the Concentrated Databases Administrator as referred to in section 1 of Chapter IV, databases of necessary information for operators and telecommunication enterprises to exchange and use Number Portability.
6. “Ported Subscriber Databases”: it refers to the databases that are constructed by the Operators and other telecommunication enterprises for exchanging and storing the routing information of Ported Subscribers.