It looks like some sort of corruption. In the lab, do you use the same database? If it is only on the customer site, then it is environmental.

Electrical, add, remove / replace a UPS. Is there any heavy machinery nearby? What type of business is it? Use a power monitor recorder.

Temperature, is the room conditioned? Does the air conditioning get turned off at night or on the weekend?

Check the other logs like Steve suggested. Mitel Tech support can help decipher the logs.


JimmyV

"Well informed people know it is impossible to transmit the voice over wires. Even if it were, it would be of no practical value" Boston Post, 1865