国家电网公司IMS行政交换网网元容灾方案研究

Research on Network Elements Disaster Recovery Scheme for SGCC IMS Administrative Switch Network

随着交换技术从程控交换向软交换、IMS分组技术的发展演进,国家电网公司经过论证确定了采用IMS技术体制建设改造行政交换网。通过对IMS核心网技术的深入研究,提出了国家电网公司IMS行政交换网容灾建设方案,重点给出了核心网元包括呼叫会话控制功能(Call Session Control Function,CSCF)、会话边界控制器(Session Border Controller,SBC)、E.154号码到URI的映射(E.154 number URI Mapping,ENUM)/域名服务器(Domain Name Server,DNS)、媒体网关控制功能(Media Gateway Control Function,MGCF)的容灾设计方案。该方案可以实现网元发生故障时,业务不受影响,为国家电网公司交换网的网络安全、管理维护提供了重要保证。

With switch technology evolving from the program-controlled to soft-switch and IMS technology, SGCC adopts IMS technology to rebuild and construct administrative switch network. With in-depth study of the IMS core network technology, this paper presents a disaster recovery scheme for the SGCC administrative switch network, and mainly introduces core network elements including CSCF（Call Session Control Function, CSCF）, SBC（Session Border Controller, SBC）, ENUM（E.154 number URI Mapping, ENUM）/ DNS（Domain Name Server, DNS） and MGCF（Media Gateway Control Function, MGCF）. This scheme can ensure the service will not be affected by IMS network elements faults, to provide an important guarantee for network security and maintenance of SGCC administrative switch network.