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Conjoint analysis of demand for IP telephony: the case of Japan

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  • Takanori Ida
  • Shin Kinoshita
  • Masayuki Sato

Abstract

With the recent diffusion of broadband (BB) services, Internet protocol (IP) telephony is expected to spread significantly in Japan. This article investigates the demand for IP telephony by using conjoint analysis. Projecting IP telephony demand also contributes to Japanese info-communication policy discussions. Two points are made. First, IP telephony is still currently considered an optional supplement or an add-on service option of high-speed BB Internet access services in Japan rather than a close substitute of existing plain old telephone service (POTS). At this point, we find little evidence that many households will promptly forsake their fixed line service for IP telephony. Second, we conclude that the key condition for the proliferation of IP telephony is the complete guarantee of quality of service (QoS), including voice quality, number portability, fax usage and emergency access, comparable to or exceeding that of existing POTS.

Suggested Citation

  • Takanori Ida & Shin Kinoshita & Masayuki Sato, 2008. "Conjoint analysis of demand for IP telephony: the case of Japan," Applied Economics, Taylor & Francis Journals, vol. 40(10), pages 1279-1287.
    • Handle: RePEc:taf:applec:v:40:y:2008:i:10:p:1279-1287
    DOI: 10.1080/00036840600771312
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    Cited by:

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    3. Šaric, Amela & Lange, Mirjam R. J., 2014. "Deregulating fixed voice services? Empirical evidence from the European Union," 25th European Regional ITS Conference, Brussels 2014 101385, International Telecommunications Society (ITS).
    4. Bourna, Maria & Mitomo, Hitoshi, 2014. "Understanding broadband under-utilization in Japan," 20th ITS Biennial Conference, Rio de Janeiro 2014: The Net and the Internet - Emerging Markets and Policies 106887, International Telecommunications Society (ITS).
    5. Nakamura, A., 2011. "Estimating switching costs after introducing Fixed-Mobile Convergence in Japan," Information Economics and Policy, Elsevier, vol. 23(1), pages 59-71, March.
    6. Nakamura, Akihiro, 2015. "Mobile and fixed broadband access services substitution in Japan considering new broadband features," Telecommunications Policy, Elsevier, vol. 39(2), pages 140-154.
    7. Nakamura, Akihiro, 2013. "Retaining telecommunication services when universal service is defined by functionality: Japanese consumers' willingness-to-pay," Telecommunications Policy, Elsevier, vol. 37(8), pages 662-672.
    8. Hee-Jong Yang & Seul-Ye Lim & Seung-Hoon Yoo, 2017. "The Environmental Costs of Photovoltaic Power Plants in South Korea: A Choice Experiment Study," Sustainability, MDPI, vol. 9(10), pages 1-13, September.
    9. Ju-Hee Kim & Hyo-Jin Kim & Seung-Hoon Yoo, 2018. "Economic Value of Building a Firefighter Training Academy for Urban Disaster Management in Seoul, South Korea," Sustainability, MDPI, vol. 10(12), pages 1-11, December.
    10. Kushagra Kulshreshtha & Vikas Tripathi & Naval Bajpai, 2018. "1971–2017: Evolution, exploration and test of time of conjoint analysis," Quality & Quantity: International Journal of Methodology, Springer, vol. 52(6), pages 2893-2919, November.
    11. Meade, Nigel & Islam, Towhidul, 2015. "Forecasting in telecommunications and ICT—A review," International Journal of Forecasting, Elsevier, vol. 31(4), pages 1105-1126.

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