S100 PRI keep freezing twice a week?

Can someone help me as On Yeastar S100 PBX, PRI card keep freezing twice a week. To keep the business usual, I need  to restart the PBX every time.

I checked the time sync with E1 line, its good. I did all basic troubleshoot, nothing works to resolve the issue.

Any help will be highly appreciated.


Thanking You.


Reza M


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