电信行业重组、3G牌照发放后,国内三家电信运营商迈入全业务运营时代。各运营商均需从只提供固定或移动单一业务的运营模式,向提供固定和移动相融合业务的运营模式转型,业务融合对通信网络特别是核心网络提出新的需求,运营商需将现有分离的或单一的核心网络演进成为支持多种接入方式、提供融合业务的网络。 Telecommunication industry restructuring, 3G licenses issued, the three domestic telecom operators into the era of full-service operations. All operators need to transition from a single mode of operation that provides only fixed or mobile services to an operation mode that provides both fixed and mobile services. The convergence of services puts forward new demands on the communication network, especially the core network. Operators need to convert the existing A single or separate core network evolves into a network that supports multiple access modes and provides converged services.