电话交换机的种类有哪些？

Program-controlled PBX is applied to medium-sized enterprises, factories, schools, institutions, large and medium-sized hotels and other occasions. The characteristics are: the extension branch is widely involved in distance, generally reaches 5000 meters round, and has some special interfaces.

程控交换机： 应用于大、中型企业集团使用，一般由运营商提供30B+D数字中继DID方式接入以模块局、虚拟网的方式构建做为局用交换机的下放的终端局。特点是：注重设备的构造的稳定性、接口的多样性、系统的严谨性，较少的使用分机的细节功能，完成能实现基本的通话功能就可以。

SPC Exchanges: used in large and medium-sized enterprise groups, generally provide 30B+D digital relay DID by operators, access modules and virtual networks, and build terminal bureaus for local switches. The characteristics are: focusing on the stability of the structure of the device, the diversity of the interface, the rigor of the system, and the detailed function of the extension machine, so that the basic call function can be completed.

程控调度机： 应用于电力、水利、工矿等特殊环境，是针对这些特殊的环境设计的一种专用电话交换机，用于企业生产调度的应用。由于其使用环境恶劣、复杂且有着极高的重要 性，故除了要实现一些特殊功能外，对设备的工艺、元件采用、防磁干扰等方面都有特殊的设计要求。

Program-controlled dispatcher: applied to power, water conservancy, mining and other special environment, is a special telephone exchanger designed for these special environments, which is used for enterprise production scheduling. Because of the bad environment and complex and has a high importance, so in addition to realize some special functions, the equipment, technology, and other aspects of components using magnetic interference have special design requirements.

军用电话交换机： 功能极其简单，采用原始的脉冲、甚至磁石设计。

Military telephone switchboard: the function is extremely simple, using the original pulse, even the magnet design.

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This is the introduction today. If you want to know more information about our company's products, welcome your telephone consultation, we will provide you with detailed product information.