使用保密电话保密电话装配有防窃听的话音保密器,它会将语音信号进行加密,电话线的另一端也需要一个保密器来解码。这样即便中间被人截取,也无法判断谈话内容。俄罗斯总统普京喜欢用固定电话。他的办公桌上共有4部电话,办公室外的桌子上还有11部电话。与普通电话不一样的是,普京办公室的电话虽然在技术上都是 Using a confidential telephone A confidential telephone equipped with an anti-eavesdropping voice encryptor encrypts voice signals and a second confidential device to decode the other end of the phone line. Even if the middle is intercepted, it is impossible to judge the content of the conversation. Russian President Vladimir Putin loves to use landline phones. There are 4 phones on his desk and 11 on the desk outside the office. Unlike ordinary phones, Putin’s office phones are technically