Suprapto, Yuyun, Syamsul Maarif, Tot```ok Warsito, and Eriyandi Eriyandi. 2018. “Sistem Monitoring Private Automatic Branch Exchange Dengan Tampilan Personal Computer Berbasis Wirelless”. Jurnal Penelitian 3 (4):52-61. https://doi.org/10.46491/jp.v3i4.118.