The purpose of this research is to examine wheras there is a relationship and influence of communications system, communications climate, and corporate culture towards employee performance through communications audit method. The samples of this research are 96 employees of Biro Sumber Daya Umum Koperasi Telekomunikasi Selular Head Office. Descriptive Analysis, Rank Spearman Correlational Analysis, and Multiple Regression Analysis were run with SPSS software version 21 for data analysis. The result of the analysis shows that the relationship between the three independent variables has no significant effect on the dependent variable individually. The relationship between the three independent variables has a significant effect on the dependent variable simultaneously. The empirical findings indicate that in order to improve employee performance, it is necessary to consider the communications system, communications climate, and corporate culture simultaneously.