Research And Design Of Carrier-class Ip Bearer Network

As the business needs and communication technology development, communication network for business and network convergence has become the main communication networks.Individual IP communications business network is a network of evolution hedonism, IP-based integrated technical support to the further development of a communication network has become the communication industry consensus of all parties. In communication standards, ITU-t, 3GPP and 3GPP2, and so the international standards organization is on a guided individual business network evolution to IP.The ITU-t standard for NGN is currently under preparation, will be moving a complete NGN Rel1 standard version, it will take the IMS NGN Rel1 as the core of the network layer, carrier-class of voice, data and multimedia services are based on IP.Unified IP network structure, can be simplified to reduce the cost of operation and maintenance to provide integrated services.At present, the other major operators in China, such as China Telecom, China Mobile, both had begun an existing carrier-class business evolution to the IP-based work, respectively, have created a new carrier-class in the next few years business bearing capacity of comprehensive IP network. Interchange (EDI) IP network structure for petals symmetric network design, divided into core layer, tandem layer and access layer; technical implementation to IP-based, hosting for your business with MPLS, combined with deploying QoS network reliability as a major technical support for networking.In this issue we introduce carrier-class project focus 50ms protection technology and technology users and business, implementing the two dimensions of diversity, wide network of various models of 2, 3-tier service.This paper delves China Unicom IP network network construction in the project section, the of and proposed a plan, to provide interchange (EDI) in the new competitive environment, new business development and meet the new technology for the next few years Unicom carrier-class service network all IP-based on the evolution of softswitch IP host, moving grouping and value-added services, public VPN and Enterprise boss system needs, supporting long-term softswitch, 3G, IMS, and so on the evolution of the network and IP-based data carrier-class service to the public.