南京地铁程控交换机时钟同步技术研究

PBX Clock Synchronization Technology in Nanjing Metro

程控交换机的时钟同步是地铁系统最基本的技术环节之一。文章针对南京地铁某线程控交换机时钟不同步情况,在没有增加新的硬件以及硬件接口的前提下,通过修改软件参数配置、开启程控交换机的网络校时功能,实现了程控交换机时钟同步,保证了程控交换机时间的准确性,提高了运营服务质量。

The paper discuses the case of PBX clock was not synchronizing in a line of Nanjing metro. In the absence of adding new hardware and hardware interfaces, by modifying the confi guration parameters of software, and starting PBX network time calibration features, it realizes the PBX clock synchronization, ensures the accuracy of the PBX time, and improves operational quality of service.