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省内长途电话网如何由四级 (C1、C2、C3、C4)网向二级 (DC1、DC2 )网发展 ,根据江苏省长途电话交换网的现状 ,长途业务发展趋势和原邮电部关于长途网路组织的原则 ,提出了网络组织的四种方案进行探讨。
According to the current situation of long-distance telephone exchange network in Jiangsu Province, the development trend of long-distance business and the long-distance business development trend of the former Ministry of Posts and Telecommunications Network organization principle, put forward four kinds of network organization to discuss.