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近两三年来,我国许多大中城市开通了集群移动通信系统。这种采用先进的电脑控制多信道技术、保障通信畅通的公用调度移动通信,其手机被称为“二哥大”。采用“二哥大”进行单位内部的生产指挥调度通信是很理想的,可选呼、群呼,也可实现私密通话,其技术档次与价格水平介于“大哥大”与BP机,是一种中档次的移动通信系统。集群,就是将多个信道通过自动控制集于一体,使大量用户共享较少的频率资源。用户拨打电话时,不需要人为转换信道,而由自动控制系统指配一个空闲信
In the past two or three years, many large and medium-sized cities in our country have launched cluster mobile communication systems. The use of advanced computer-controlled multi-channel technology to ensure smooth communication public scheduling mobile communications, the mobile phone is known as “brother.” The use of “brother” for the internal unit production command dispatching communication is ideal, optional call, group call, but also to achieve private calls, the technical level and price level between the “big brother” and the BP machine, is a Kind of mid-range mobile communication system. Cluster, that is, multiple channels through automatic control in one set, so that a large number of users to share less frequency resources. When a user dials a call, it does not need to manually convert the channel, but an idle letter is assigned by the automatic control system