Estimating demand curve in the Korean VoIP telecommunications market

Jeong Ho Kwak, Bong Gyou Lee

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The VoIP (Voice over Internet Protocol) market in Korea is showing rapid growth since domestic carriers initiated the service in 2006. These carriers are now seeking new revenue sources from various convergence services and are increasing investment into VoIP. In particular, local exchange carriers (LECs), formerly reluctant to invest in technologies that would cannibalize their local telephone revenue, have started to invest in VoIP, in recognition of the current convergence of media and the telecommunications industry, as well as in the face of intensifying competition. In this study, we determined that VoIP call rates and landline telephony call rates were the most important factors affecting VoIP call demand, in addition to network externality. We also verified that landline telephony is no longer a supplement to VoIP, but rather, a substitute that has considerable influence on VoIP call demand. Empirical evidence is expected to be considered in policy decision making on current issues in the IT industry, such as access prices or competitiveness assessment. The current empirical analysis on the Korean VoIP industry and the adherence to lessons learned from policy enforcement should provide valuable information to countries seeking to develop their own VoIP industries, as well as to businesses developing new strategies based on the VoIP market.

Original languageEnglish
Pages (from-to)713-728
Number of pages16
JournalTechnological Forecasting and Social Change
Issue number4
Publication statusPublished - 2011 May

Bibliographical note

Funding Information:
This research was supported by the KCC (Korea Communications Commission) , Korea, under the CPRC (Communications Policy Research Center) support program supervised by the IITA (Institute for Information Technology Advancement) ( IITA-2009-C1091-0901-0007 ).

All Science Journal Classification (ASJC) codes

  • Business and International Management
  • Applied Psychology
  • Management of Technology and Innovation


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