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Continue to ChatETB, Une EPM, Tigo y Movistar compartirán infraestructura en Colombia https://www.telesemana.com/blog/2013/05/10/etb-une-epm-tigo-y-movistar-compartiran-infraestructura-en-colombia/
ETB, Une EPM, Tigo y Movistar compartirán infraestructura en Colombia https://www.telesemana.com/blog/2013/05/10/etb-une-epm-tigo-y-movistar-compartiran-infraestructura-en-colombia/