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介绍黑龙江省六大本地网建长途局的必要性 ,分析并比较几种长途局兼SSP的组网方案 ,探讨了在我省的可行性。
This paper introduces the necessity of establishing a long-distance office in six local networks in Heilongjiang Province, analyzes and compares several networking schemes of Long-distance Bureau and SSP, and discusses the feasibility in our province.