一、概述通信系统是数字化建筑及居住区的重要组成部分,它具备对语音、数据、图像等信息的收集、处理和提供决策支持的能力,提供有效的信息服务,以满足建筑及居住区内外通信的的需要。通信系统由用户终端设备、交换设备和传输设备组成,信息传递的形式主要有语音、文字、数据及图像等。本部分描述的通信系统主要 I. Overview Communication systems are an important part of digital buildings and residential areas. They have the ability to collect, process and provide decision support information such as voice, data and images, and provide effective information services to meet the needs of both inside and outside residential areas The need for communication. Communication system consists of user terminal equipment, switching equipment and transmission equipment, the form of information transmission mainly voice, text, data and images. This section describes the main communication system