Hi,
I am currently on a CUCM 8.6 cluster. I had to add four more new servers to the existing cluster from a different location over the WAN. When I added the new servers to the cluster I saw that the phones which are already registered to the cluster got unregistered and then started to register on RTMT.
The same was noticed four times when I added the four new servers.
Since these are new servers and all the CUCM services are de-activated I am not sure why the existing phones that are registered to the other active servers in the cluster are getting unregistered.
Please note that the phones started to unregister when the service on the new CUCM server came up.
Please help.
Thank you.