电信通信的作用是传递信息，在现代社会中占据重要的基础设施地位。对于个人、团体、国家而言，顺畅的信息传递都是基本的需求? 这种地位决定了人们要求随时能够使用电信业务，也就是电信通信服务通常要求全天候可用。而且电信通信是采用电磁系统进行非实物形态的信息传递，与邮政通信相比具有高度的时效性

-telecommunication role is to convey the message that in a modern society occupy an important infrastructure status. For individuals, groups, countries, smooth transmission of information are basic needs such status of the people decided to use the demands of the telecommunications business, is telecommunication service is usually available all-weather demand. And telecommunication systems is the use of electromagnetic non-physical forms of information delivery, compared with the postal communication with a high degree of timeliness