Failover state on SIP trunking

Hello,

 

Is it possible that Active node goes to Out_of_Service state on receiving too many rejects or inappropriate SDP in responses or any other mistakes related to dialog  from remote SA? According to alarm history Active node lost 80 health scores and system makes switchover. I looked for any parameters in config which are able to substract 80 health scores, but found out nothing. Network interfaces has no gw-hearbeat configured.

If there is no traffic on actual trunk system works normally. In problem case SBC has approximately 500-700 active sessions on actual trunk.

 

Thanks in advance,

 

Daureen