本文就无绳电话的性能及使用的情况作些介绍。无绳电话机属移动通信的范畴，但它与移动电话（大哥大）、全双工集群电话有一定的区别。无绳电话机简单地说就是将传统的电话机的机身手柄分离成主机与副机两部分（即母机与子机，又称固定机和移动机），使主机（母机）与市话网（? This article describes the performance and use of cordless phones. Cordless phones belong to the category of mobile communications, but it is somewhat different from mobile phones (big brother) and full-duplex trunked phones. Cordless telephone simply means that the traditional phone’s body handle is divided into two parts: the main machine and the auxiliary machine (that is, the main machine and the sub machine, also known as the fixed machine and the mobile machine), so that the main machine (the main machine) and the local telephone network (?