?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=RIO+KRISTIAN&rft.au=71120052%2C+RIO+KRISTIAN&rft.aulast=71120052&rft.date=July+2016&rft.tpages=62&rft.title=IMPLEMENTASI+VOICE+OVER+INTERNET+PROTOCOL+MENGGUNAKAN+ASTERISK+(STUDI+KASUS+CV.+TRI+SAKTI)&rft.degree=Bachelor&rft.inst=Universitas+Kristen+Duta+Wacana