This thesis is on the tariff and interconnection regulations of ISPs.
In the first part, it dealt with the ISP tariff focused on the Internet subscriber access networks (or facilities), which are the networks and facilities such as PSTN, mobile network, cable TV, xDSL, and leased lines. Theses networks are used between ISPs' subscriber access routers and subscribers in order to connect ISPs' own network and subscribers' premises without a consistent pricing model. Since the Internet subscriber access networks (or facilities) are important for costs as well as technological services, the policies and regulations of the access networks are important for the future Internet services. Also, since the fair competitions are required between various types of subscriber access media, the policies and regulations on the Internet subscriber access networks (or facilities) need to be re-evaluated on the viewpoint of ISPs. Therefore, this part dealt with the issue such as NTS(Non Traffic Sensitivity)/TS(Traffic Sensitivity), unbundling costs, NTS cost calculation in mobile telephone networks, and etc.
In the second part, the issue of interconnection between ISPs due to the new integrated service of the Internet was investigated. Although new regulation may not be needed because of the severe competition among ISPs' backbone networks, the pricing model on the interconnection between ISPs needs to be developed in the long term to adjust the tariff unbalances that are dependent on the customers' negotiation power. An ideal model has to be developed in the future taking into consideration of the Internet's unique characteristics like the ambiguity of traffic unit, traffic unbalances between customers or ISPs, and etc.
