Service Details: We do have 2 VVM phone services set up. One for all our other phones and is enterprise subscribed. And the other is not enterprise subscribed and we use it for the 8861 phones since those require a different configuring for VVM than the other models. Both services have the same exact DNS address entered for the server parameter. When we upgraded from CUC 9 to 10, we had the IP addresses updated on the DNS entry.
Issue: 8861 VVM service subscribed to the 8861 phones are not looking at the new CUC server after we upgraded from 9.1 to 10.5 CUC. They give an error that the server is not available and that is because it is trying to connect to the IP address of the old CUC publisher (the 8861 VVM service does/did not have the IP address, it always had the DNS name in it)
Troubleshooting: I was able to get the service working on some of the 8861s by doing a handful of different steps, but the process does not seem to work consistency to resolve the issue. This included unsubscribing the service from a phone and re-subscribing it; disassociated the line and associated it, etc a combination of several things.
1 - Why if the service has a DNS name for the server parameter are some of the 'server unavailable' messages on the 8861's the old CUC pub and some are the DNS address?
2 - Why when the DNS entry was updated with the new CUC 10.5 pub and sub addresses, the 8861's will not recognize that and connect to it properly?
3 - What is a consistent way to address all of these 8861 issues when it comes to the VVM service not working? Since the steps I did on one 8861 addressed the issue on one phone but did not address the issue on another 8861.
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