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This study conducts an analysis that find out the regional economic convergence phenomenon among 16 domestic regions by using absolute and conditional convergence model. Especially for the conditional convergence model, telecommunication CAPEX(Capital expenditure) has divided into various types. The data used in this research is unbalanced, depending on the period of each statistical data from 16 domestic regions, but formed a panel data using statistical data from 1995 to 2012 in general. In addition, this research analyzes the absolute and conditional convergence phenomenon through random effect model. To begin with, the conditional convergence model in the research has progressed with the objective of searching out the effect of physical capital, human capital, and telecommunication CAPEX on the convergence of regional economic through Barro(1989)’s empirical model. Besides, in order to understand a various relationship between telecommunication CAPEX and regional economic growth, telecommunication CAPEX consists of two types(wire, wireless) and technologies(3th generation, 4th generation). As a result, this research shows a fact that the absolute and conditional convergence phenomenon of regional economic growth exists among 16 domestic areas. Secondly, in case of telecommunication CAPEX, wireless(1.4%) CAPEX of the convergence rate is faster than wire(0.2%) CAPEX. Also, the convergence rate applied for periods of 4th Generation(1%) wireless telecommunications CAPEX is faster than 3th Generation(0.5%). Thirdly, in the analysis of determination factor, telecommunication CAPEX, irrespective of wire or wireless, has positive impact on regional economic growth by helping a capital accumulation in region. However, since wireless CAPEX has a negative relationship associated with average rate of regional economic growth, better planned telecommunication policy for regional economic growth is needed. Meanwhile, this research has a limitation that cannot compose a perfect telecommunication CAPEX stock by using telecommunication and facilities construction data. Nevertheless, this research enable us to not only understand the relationship between telecommunication CAPEX and regional economic growth, but also provides fundamental data for a telecommunication policy.