Open Science Research Excellence
Heru Nurwarsito and  R. Arief Setyawan and  Rakhmadhany Primananda,  Implementation of the SIP Express Router with Mediaproxy Method on VoIP.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2010, vol. 43(7). 1044 - 1049[viewed 17 July 2019]. Available from: http://waset.org/publications/15614.