This study aims to compare the Aloconal Batak language with the Indonesian Alophone through phonological analysis. The research method used is a comparative descriptive analysis by collecting data from native speakers of Batak and Bahasa Indonesia. Data are collected through interviews and direct observations. Analysis was conducted by comparing alophone-alophone that appeared in both languages, including differences in pronunciation, emphasis, and intonation. The results of the analysis show that there is a significant difference between the Bath and Alophone Bloit alloop in the case of pronunciation and emphasis. This findings indicate that the second phonological system of language has different characteristics. The implications of this study are the importance of understanding the phonological differences between Batak and Indonesian language in the context of the language of the second language or foreign language teaching.
