Due the implementation of Digital Dividend for the 4G/5G networks, several studies have considered the impact of the coexistence of DTT and LTE services. The coexistence scenarios on the frontier is a novel subject and the authors did not found technical studies relating two countries. Due the particular case of the frontier between Colombia and Brazil, where two DTT services are presented (DVB-T2 and SBT VD) and one IMT service (LTE/LTE-Advanced) a series of 38 interference scenarios where found. This paper present a study for the coexistence of DTT and LTE services based on theoretical and technical studies required by the Colombian government to initialize planning of the 614-698MHz band and the coexistence of DTT and LTE services on the Colombia-Brazil Frontier.