新型电话线路保护器邢观峰同着现代通信事业的不断发展，电话已日益广泛地进人千家万户，成为必不可少的联络工具．由于电话外线有很长一部分暴回于室外，极易被非法窃听、窃用，使用户爱受经济损失．本文介绍的电话线保护器具有以下优点：１．在用户能话时可随时检测出进... With the continuous development of modern communications, Xing Guofeng, a new telephone line protector, has become an indispensable contact tool as the number of telephones has increasingly reached tens of thousands of households. As the phone outside has a very large part of the violence back to the outdoors, easily eavesdropping illegal use of theft, so that users love to suffer economic losses. This article describes the phone line protector has the following advantages: 1. In the user’s speech can be detected at any time into ...