With all IP network transformation and wide NGN deployment, more and more voice, video and multimedia services are carried over IP networks.  Since nature IP technology is based on bandwidth sharing and connectionless packet switch mechanism, it is unavoidable to cause various service distortions, such as packet loss, delay and jitter, etc. Due to this reason, it causes new challenge for IP carrier backbone to provide the same QoS level as that of traditional PDH/SDH transmission line.
So, it is important to assure the IP network performance and service quality for both media and signalling transmission from network planning, managing, monitoring and controlling aspects, in order to implement a manageable NGN networks with predictable service quality level. To realize effective NGN network maintenance and guarantee its service quality, it is necessary to perform the real-time IP network performance monitoring, measure the voice and video service quality.
Vixtel Technologies’s NetVista NGN system is an advanced IP carrier network performance and NGN signalling service quality assurance solution. It can help the service providers to monitor the whole NGN networks to assure the performance of IP core network and end-to-end voice quality from customer perceivable experience. NetVista NGN system consists of NetVista Agents, Central Test Server and dedicated reporting system. The system can provide cost effective solution to cover the whole NGN network for end-to-end network performance and service quality monitoring and analysis.