Liu zhi, Tang Qiusheng. Interface Improvement of the ZDD-12 Power Line Carrier Without Voice Frequency Fram[J]. 2003, (6): 32-33+51.DOI:
ZDD-12载波机退音频架接口改造方案
摘要
通过改造 ZDD- 1 2电力线载波机
使之具有能直接与 PCM、交换机等设备相连接的 4W E/M接口
达到退出中心主站音频架
精简设备
减少故障点
降低运行与维护费用的目的。
Abstract
The method for improving the interface of the ZDD-12 power line carrier is introduced in this paper. By the improving
the carrier is of a 4W E/M interface
which is able to be connected directly to PCM and exchange equipment. As a result
the voice frequency frame can be omitted; The improved carrier wave machine is simple and reliable in configuration; Its operation and maintenance costs are low.