Disaster recovery scheme for the SGCC of IMS administrative switching network

With switching technology evolving from the program-controlled to soft-switch, and IMS technology, the State Grid Corporation of China(SGCC) determined to adopt IMS technology to rebuild and construct administrative switching network through two years detail analysis demonstrations. In the base of in-depth study of the IMS core network technology, this paper presents a disaster recovery building scheme for the SGCC of Administrative Switching Network, and emphasizes disaster recovery scheme of core network elements including CSCF, SBC, ENUM / DNS and MGCF. This scheme can make the service is not affected when IMS network elements break down, and provide an important guarantee for network security and maintenance of the SGCC of Administrative Switching Network.