无绳系统康乔早期的无绳电话是模拟家用无绳电话（ＣＴ１），俗称子母电话机，它是单移动、单信道终端系统，覆盖半径仅为几十米，移动范围极其有限，但由于技术简便，费用低廉，很快在世界上推广普及。为克服ＣＴ１话音质量低，保密性能差，抗干扰能力弱等缺陷，英国首先... Cordless Systems Comcast’s early cordless telephones were analog home cordless phones (CT1s), commonly known as daughter phones, which are single-mobile, single-channel end systems that cover only a few tens of meters in radius and have extremely limited range of motion, but due to their technical simplicity , Low cost, quickly popularized in the world. To overcome the CT1 voice low quality, poor confidentiality, anti-interference ability and other weaknesses, the United Kingdom first ...