Third, the security and reliability requirements: bearer network should provide 3G services redundant backup feature, in the case of node and link failures, fault recovery time should meet the needs of the business. At the same time, the laptop battery bearer network should be able to effectively guard against all kinds of illegal attacks and viruses impact, and to ensure the safe and stable operation of 3G network. In addition, the a 3G media stream and signaling streams are different requirements on safety and reliability, the signaling stream is relatively higher. the bearer network traffic flow from the initial terminal to the information source and server The main end-to-end traffic flow of the main changes in the bearer network design should take full account of these changes.Fifth, to adapt to the needs of network development: the design and deployment of 3G bearer network should give full consideration to the needs of the future network development, especially considering the future softswitch network integration and the introduction of IMS bearer network and demand, to adapt to future integration of business development needs. Select networking,Traditional bearer network is basically a dedicated private network, which can maximize the protection of network security and the quality of the bearer. Laptop battery IP network can share a physical network, allowing a variety of business and the means to achieve isolation between the logic of traffic flowing through the tunnel, VPN, etc., by the DiffServ TE, RSVP and other technical implementation of different business flow QOS guarantee. So when the bearer IP, there will be a dedicated and shared problems.PHASE-2 core network circuit domain IP bearer; Phase-3 IP-based air interface, and eventually reach full IP-based transmission. Acer as07a31 accu Acer as07a51 accu Acer as07a71 accu Acer Aspire 4732z accu
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