OBS_VALUE: Under the definition in Article 5 of the Regulations on Interconnection between Public Telecommunication Networks, interconnection includes access to public networks and use of all types of public telecommunication services by another telecommunication service provider.The Regulations on Telecommunications and the Regulations on Interconnection between Public Telecommunication Networks mandate interconnection between telecommunication networks in accordance with the principles of economy, reasonableness and fairness.  A dominant public telecommunication service provider is obliged to promulgate Interconnection Rules (including the procedure, time limit, interconnection points, catalogue and charge of non-tied-up network elements) on the basis of transparency and non-discrimination.  The Interconnection Rules are subject to scrutiny by the government ministry in charge of information industry and binding on the dominant public telecommunication service provider. (Article 18 of Regulations on Telecommunications and Article 7 of Regulations on Interconnection)The standard of charges for telecommunications services shall be primarily based on cost.  (Article 23 of Regulations on Telecommunications)When a dominant telecommunication service provider provides interconnection to other telecommunication business providers, the service quality shall not be lower than equivalent service within its own network to its subsidiaries or branches. (Article 21 of Regulations on Telecommunications)