电话交换机系统的不同种类及特点

There are two different types of telephone exchange systems in Ji'nan, which are digital and analog. So what are the different features of the two types?

现阶段人们使用的大部分程控交换机是IP程控交换机，还有纯IP电话的软交换设备，即服务器。从交换方式上来看，数字式和模拟式的电话程控交换机是有区别的，前者和的是时分交换，而后者使用的是空分交换。前者使用的是无阻塞的交换方式，而后者则有可能会产生通话绳路上的限制。

At this stage, most of the program control switches are IP SPC switches, and the soft switching devices of pure IP phone, that is, the server. In terms of exchange mode, there are differences between digital and analog telephone program-controlled switches. The former is time division switching while the latter uses air division switching. The former uses non blocking switching, and the latter may produce restrictions on the call line.

模拟式的电话程控交换机一般通话的质量差一些，而且很可能会被外界干扰，而且功能也比较少，传输距离有限。如果在现阶段128分机以下的话，交换机有部分使用的是模拟式的还有一些企业使用的是数字式的程控交换机。

Analog telephone program-controlled switchboard usually has poor quality of call and is likely to be disturbed by the outside world, and its function is relatively limited, and the transmission distance is limited. If the current phase is below 128, the switch is partially analog and some companies use digital SPC switches.

数字式的交换机机会有数字分机的接口提供，也能够模拟分机的接口，可以满足大多数的用户需求。对于IP交换机而言，当用户在布线时，只需要一条网线就可以，在电话的别一条需要接电脑，用户布线成本及维护成本得到了有效节约。

Digital switch opportunities are provided by digital extension interface, and can also simulate the interface of the extension, which can meet the needs of most users. For IP switches, when users are wiring, only one wire can be used. One of the phones needs to be connected to the computer, and the cost of user wiring and maintenance is effectively saved.

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This article is based on the friendship and dedication of Ji'nan telephone exchange system and more related knowledge. Please click: http://www.tele-super.com, we will provide you with the most advanced technology and the most sincere attitude to provide you with the most comprehensive service. We will continue to contribute to you and look forward to it.