电话是人们工作和生活中使用最普遍、最基本的通信工具。在高节奏、高信息的时代,人们已经离不开电话通信了。民航专网程控交换设备,担负着机场地面各运行部门之问的信息沟通,提供航行、情报、调度等重要部门的地面通信保障任务。维护和管理好程控交换系统,使之运行在最佳状态,给用户提供最佳服务,就显得尤为重要。通过长期的工作实践,对于民航专网程控交换设备有关故障的处理与维护,笔者总结了以下三种主 Telephone is the most common and basic communication tool used by people in their work and life. In the era of high pace and high information, people can not do without the telephone communication. Civil aviation private network program-controlled switching equipment, responsible for the operation of the airport ground asked the communication between the various departments to provide navigation, intelligence, scheduling and other important departments of the ground communications security tasks. Maintaining and managing the program-controlled switching system so that it is operating at its best and providing the best service to users is especially important. Through long-term work practices, for civil aviation network controlled exchange equipment troubleshooting and maintenance, the author summed up the following three main