本研究主要探討兩岸之間的國際電話市場發展和競爭態勢，分析相關固網與行動業者的經營模式與國際電話的營運策略，並以法國電信當做個案分析說明。研究自1993年兩岸開通國際電話以來到2008年底期間，兩岸間的國際話務量變化及雙邊協議與結算的變革。經探討本議題之後所得到的結論如後面敘述:(1)大陸為平衡結算差額，造成兩岸往來話務量的差異；(2)行動取代固網的效應與過高的固網撥行動終接費用是造成國際結算差異的主因，業者應以淨成本決定其可承擔的超額話務量；(3)網路電話無法免費接入國際的固網及行動通信用戶，落後國家的通信仍然要以傳統國際電話為主；(4)通訊匯流為挽救固網建設及提高用戶價值的重要方法。
依據本研究後之建議：(1)因應行動通信取代固網電話的效應，政府應嚴格監管固網與行動之間的接續費率及國際漫遊費率，以保障消費者權益並促進市場的公平競爭；(2)數位匯流服務漸成市場主流，政府及業者需積極制定政策、整合資源、發展國內應用環境，來提昇未來競爭能力。(3)國際電信業者正積極擴建同時傳輸語音、信令與多媒體的IP電信網路，我國業者應儘早加入相關國際聯盟以與全球新網路接軌。

This paper, based on an analysis of the business patterns and international voice strategies of fixed and mobile operators, aims to study the international telephone markets and competition situation accorss Taiwan Strait. France Telecom is used here as a case study. The study of the period is between 1993 and 2008 which leads to the following conclusions: (1) Mainland’s efforts to balance settlement difference results in a disparity in telephone traffic load, (2) connection expense is the main cause for settlement difference, so operators depend exceeding quota on their net cost, (3) network telephone offers no free access to fixed mobile and mobile phone users, so developing countries still rely very much on traditional fixed-line service, (4) convergence is the most effective means to saving fixed mobile correspondence and increasing the value of users. Some suggestions have been made according to this study: (1) in accordance with the effect caused by fixed mobile substitution, the government should soon revise the policy of fixed mobile transferring to mobile phone connection expense and promote fair market competition, (2) due to the fact that convergence service has gradually become the mainstream, the government must team up with operators to stimulate competitive power, (3) telecoms operators should strive to join in related international alliance to construct IP speech transmission network and thus to connect with the new global network without delay.

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三、 網站

交通部電信總局網站，http://www.dgt.gov.tw/
中華民國統計資訊網，http://www1.stat.gov.tw/
交通部統計資料網站，http://www.cht.com.tw/