Where there is Internet access, whether special network or VPN Internet, you can set up VoIP phone systems in many ways, free calls between each other. 

 JSY2000-06S/SOC8000 Series IP-PBX is Shenou independent research and development and production of intelligent, multi-use, reliable voice, data and video in one of the multimedia terminal. IP-PBX systems to low-cost, high efficiency, less restricted by geographical distribution, availability and adaptability, enabling centralized management and control of other advantages, is becoming the main communication system integration. 
 SOC8000 Series IP-PBX is based on IMS and NGN's private branch exchange platform with a clock speed of 300 trillion ADI 32-bit digital signal processing chip BF531 processor for voice and fax services, customized by Shenou dedicated 800 MB per hour 100 MB chip and TI's TMS320C5402 speed as the host processing system. Powerful hardware processing power to ensure that the SOC8000 IP-PBX is still at full load conditions will not be blocked. Follow the standard SIP, H.264, G.711, G.729 and other media protocols, coding and decoding voice signals (such as iLBC, GSM, G.711, G.729A, G.723.1), fax (T.38 , T.30), and echo cancellation, and other major functions. A typical will VoIP (Voice over IP, an IP network by the transmission of voice services) and PSTN (traditional phone network) closer together. You can also create a powerful call center, and low cost. Fully integrated network hardware and software, can also serve the more widely used. 


 Chongqing switch telephone exchange network to provide VPN network, IP telephone switches, VIOP PBX