How to clear alam CLK_NO_TRACE_MODE in Microwave link

Hello everyone!

This post will share with you how to clear alam CLK_NO_TRACE_MODE in Microwave link.

The alarm CLK_NO_TRACE_MODE indicates that the clock source is not in the lock mode. Meaning that the clock source is on 'Free run mode'. This alarm reported that the current clock does not trace any clock source. This alarm usually will appear after the microwave link has already been aligned and sufficient RSL has been achieved. When the clock is not in the locked mode, the system clock is not of high quality. This alarm going to affect the service which may have bit errors when the clocks between NEs are not synchronized. If a base station traces a clock that is carried by an Ethernet service, a large clock frequency deviation may occur.

In RTN910 and RTN905, the clock source only to be synchronized between near-end site (Site A) and its peer end site(Site B). The clock source for Site B will be referred to Site A through the microwave's link as can be seen in the figure below:

To configure the clock, after login to the NE using U2000 Client. U2000 WebLCT also supports this operation. Go to Object Tree on Site B's NE. choose Configuration > Clock > Physical Clock > Clock Source Priority from the Function Tree. Then select the System Clock Source Priority List tab. Click Create and then Add Clock Source dialog box will pop up as per the figure below:

Select the 3-ISV3(PORT-1) which is an IF Board. After that, just click OK.

After the clock source is added to the Clock Source Priority List, go to Configuration > Clock > Physical Clock > Clock Synchronization Status. Click Query and the U2000 will show the clock priority status. For the first 5 minutes after the clock priority is configured, the status will be 'Holdover Mode'. After the clock is synchronized, the status will then changed to 'Normal Mode'. Go to NE current alarm to check the alarm. The alarm is cleared.

Thank you!