Hi Boris,
Unfortunately, its hard to say if the above prints would cause audio problem or not. We need to see full RTF logs and wireshark of the problem calls at that time to make a determination on the cause. I had seen the above print before though even in good known working cases as well, so it might not be applicable. I would suggest to open a ticket with dialogic services support team if you have aforementioned logs available for review. Also, you would need to make sure the site has SLA (VPUP) tied to the currently running HMP license in order to received support along those lines.
Regards,
Jeff M.