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		Adi Winatha, Mahendra, 		Diafari Djuni H., I G.A.K., AND 		Sudiarta, Pande Ketut.
" ANALISIS PENGARUH PERUBAHAN CODEC TERHADAP QUALITY OF SERVICE VOIP PADA JARINGAN UMTS" <em>Jurnal SPEKTRUM</em> [Online], Volume 1 Number 1 (15 October 2014)