ZTEhas a completed network management system covering all the functional layers of the NGN network.All network management is implemented on a unified network management platform,which supports flexible technical upgrading to meet the requirements of technology evolution.The professional network management systems tend to converge at the network and service layers,and uniformly provide good support for the uppermost level of business operations system,as shown in Figure 4.

Services based on NGN will create many new requirements for customer service,which may have influence on the NGN OSS.ZTEtakes such influence into consideration in the design of NGN OSS,and its system is able to provide operators with new customer-oriented services.

3 Conclusions

At present,the network coverage and technical advance of Chinese telecom operators have ranked at the top of the world,but the network management level,operations level and economic returns are left behind.After entering the World Trade Organization(WTO),all telecom operators in China face the challenge of“how to reduce cost and retain customers”.Both external and internal markets have increasing pressure.All the operators are finally turning their attention to OSSin order to solve this problem[5-9].The deployment of NGN has put higher requirements on OSS,which is expected by operators to play a better role in reducing operation cost,increasing operation income and enhancing comprehensive competence.Good understanding of the development tendency of OSSwill make the operators more confident when facing the uncertainty of future business and operation models.