I was curious to know if there was a document or rule of thumb to know what effect there will be on IP phones when either restarting a service or changing an item in system parameters.
Basically, one of my biggest fears of CUCM management is changing a parameter or restarting a service that causes all the phones to reboot (1600+ phones) in the middle of working hours.
For instance, I just restarted SNMP service in the cluster and the phones did not reset. But is there a service that would make the phones go in and out if I restarted/start stop them?
Thanks for the help!