Hi WW and thanks for your reply.
What you are describing seem to be related to our issue.
Agree the VOIP services are always communicating with the hosted voice switch my assumption based on your response is we need to have the device cease to communicate, that seems to be problematic.
I contacted our VOIP service provider today who sent me screen shot showing some phones on the primary IP and some on backup IP while primary is up, which is the real issue. There support team recommended reducing the DHCP lease time..... but I am not sure that is really going to do anything to resolve this issue.
Are there any fixes or setting we can make in the Meraki that would help reduce the time Meraki waits before switch the device back to primary?