Monday, March 25, 2013

Cisco CME/UC500: How To Set The Time/Clock On The Phones

I come across this on occasion where CME just wont keep time correctly.  It just seems to 'drift' at times.  Well, here is how you correct the time on the pohnes:
UC520#clock set 10:00:00 March 25 2013
UC520#sh clock
.10:00:02.191 CST Mon Mar 25 2013
UC520#config t
Enter configuration commands, one per line.  End with CNTL/Z.
UC520(config-telephony)#create cnf-files
Creating CNF files
UC520#wr mem

You just have to re-create the CNF files for the action to take place. 


  1. Hello Friend,
    When you type create cnf-file, Does system created automatically the file?
    If i change the time, is necessary reset the system?
    How can i reset CME?

    1. When you do a 'create cnf-file', it does this automatically. You would have to reboot the phones I think, if I recall correctly. Also, if you change the time, it 'should' update the phone for you automatically. Again, if I recall, as Im going on memory. If you want to reboot the CME, just type in "reload". If you want to wipe it clean and start again, just type "write erase".

  2. thanks for your help..
    it works..


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