The Call Bridge cluster has three CMS nodes at different sites.
Sometimes alarm "Request to remote Call Bridge timing out" appears on nodes.
After this alarm CMS doesn't create distributed calls between nodes.
There are messgaes in the log files:
15:04:10.951 requests to remote Call Bridge "cmsc1" at "https://10.201.201.5:445" timing out
15:04:26.955 failed to establish connection to remote Call Bridge "cmsc1" at "https://10.201.201.5:445"
15:04:27.082 successfully connected to remote server "cmsc1" at "https://10.201.201.5:445"
It looks like temporary network issue. But after successfully connected the alarm line stills show and distributed calls don't be created.