Hi,
This is definitely not normal or expected.
To help me better understand I wonder if you could help answer a few questions.
Are you connecting directly to an Ultrix or do you have An Ultricore CC control system?
Can you tell me what version (Ultrix or CC) you are using?
One of the tests you can do is check and see that the RCP panels don't drop any pings on the network.
Or that your controller isn't dropping pings.
If you contact support we would be more than happy to help troubleshoot with you.
#Ultrix