计费和帐务系统是本地电话网中最重要的管理系统之一。

The charging system is of great importance in the management architecture of local telephone networks.

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本文结合江苏C4本地网的实际情况，说明c4本地网纳入C3本地电话网的必要性，例举了4种C3本地网的组网方式。

Based on the real C4 local network situations in Jiangsu province, this paper illustrates the necessity of integrating the C4 into the C3 and exemplifies 4 C3 local network configurations.

youdao

本文结合江苏C4本地网的实际情况，说明c4本地网纳入C3本地电话网的必要性，例举了4种C3本地网的组网方式。

Based on the real C4 local network situations in Jiangsu province, this paper illustrates the necessity of integrating the C4 into the C3 and exemplifies 4 C3 local network configurations.

youdao