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Continue to ChatFon: "somos un operador best effort" https://www.telesemana.com/blog/2014/05/29/fon-somos-un-operador-best-effort/
Fon: "somos un operador best effort" https://www.telesemana.com/blog/2014/05/29/fon-somos-un-operador-best-effort/