AU指针调整是应用于VC4级别净荷的相位调整,而TU指针调整是用与VC12的净荷的相位调整,对与TU指针来说,从2M信号适配成VC12直至合成STM-1整个过程,并不会产生TU指针调整。若外接设备的2M信号(如交换机或路由器)与SDH时钟存在频偏,则通过适配过程完成同步。因此检测到的TU指针多半是由AU指针转化而来。所以关于指针...
User Account Control (UAC) is designed to prevent unauthorized changes to Windows. When an action requires administrator-level permissions, UAC prompts you to approve or deny the change. This helps protect your Windows device from malicious software and unauthorized modifications. You can change the ...