I am now confused with the following behavior:
1) After each CME bootup, it will automatically create the cnf-files.
2) However, for each bootup, the ntp is not synchronize.
3) And hence, I received an error message is "The cnf-files retain for its old timestamps"
4)After this, the phone registered to the CME and I found that I cannot load the directories.
The workaround for this is to go to telephony-service and type create cnf-files, and then reboot those phone sets to retrieve the configuration.
Anyone has any idea to prevent this manual action?