该系统装置并联于电话机的两端，不会影响到电话机的正常使用。

This system is connected to the two ends of the telephone, thus not interrupting the normal use of the telephone.

youdao

该系统装置并联于电话机的两端，不会影响到电话机的正常使用。

This system is connected to the two ends of the telephone, thus not interrupting the normal use of the telephone.

youdao