We had an issues where our CUCM Subscriber server went down due to a power failure. All the phones registered successfully to our CUCM Publisher at another location and people were able to make outbound calls. But the people at the same location as t...

Issue is Jabber error signing in from Internet, "Cannot find your services automatically".  It's finding the Expressway E server. Believe DNS is setup correctly.  A snippet of my attached log file that looks concerning refers to "no available Authe...

I recently migrated our UC system from 8.6 to 11.5 and that went well enough. We had not been using CUP or IM&P before, so just installed IM&P Publisher server, so we can start using Jabber clients. And eventually I'll add our VCS/Expressway servers ...

I'm trying to migrate from CUC 8.6 on a C200M2 ESXi host to CUC 11.5 on a new C220M4 ESXi host.  Looks like I can't do this with PCD as I did with CUCM 8.6 to 11.5 unfortunately.  So I build and installed CUC 11.5 on my new ESXI server.  And I thoug...

This is my first UC migration and I'm really stuck. I added my CUCM 8.6 cluster to Inventory > Clusters. And added my two B6K servers to Inventory > ESXi Hosts. I am now trying to Define Migration Destination Cluster and I get as far as Step 4 of 4 ...