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随着经济发展,数字网在我国迅速发展。特别是交通、能源、化工等大型集团公司专用通信网均由过去的单一电话网向教字网过渡,现在新建的专用通信网多数为数字网。在数字网中传输的消息不仅有话音,还包括数据、图像,而且每一数字网均有自己的特点。数字网中话音、数据、图像均由不同部门使用与维护,而数字网中设备较多且复杂,地理位置较远,因此,故障也就相对较多。数字网中出现故障后,如不能及时找到故障部位,分清是数字网中哪一系统故障,将使故障处理时间较长,从而影响数字网的正常运行。虽然数字网中各系统维护管理终端均能显示一定故障部位,但由于数字网设备较多,一时很难找到故障部位,况且有些故障在维护管理终端上没有显示。笔者在较长数字网维护工作中,经多次理论分析与实践证实,总结出一种既方便又准确的判定数字网中故障部位的方法,介绍给读者,以期起到抛砖引玉的作用。
With the economic development, the rapid development of digital network in our country. In particular, large-scale group companies such as transportation, energy and chemicals have all transitioned from the single telephone network to the teaching network in the past, and most of the newly established private communication networks are now digital networks. The messages transmitted in the digital network include not only voice, but also data, images, and each digital network has its own characteristics. Digital network voice, data, images are used by different departments and maintenance, and digital network equipment more complex and geographically distant, therefore, the fault is relatively large. After a fault occurs in the digital network, if the fault site can not be found in time, it is clear which system in the digital network is faulty, which will make the fault processing time longer and affect the normal operation of the digital network. Although the digital network in each system maintenance management terminal can display a certain fault site, but because more digital network equipment, it is difficult to find a temporary fault site, and some failures in the maintenance and management terminal is not displayed. The author in the maintenance of a long digital network, after repeated theoretical analysis and practice confirmed that summed up a convenient and accurate way to determine the fault part of the digital network, introduced to the reader, with a view to play a valuable role.