IP Telephony and Phones

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Resolved! CUCM Upgrade Tasks

Hello,  I have to upgrade CUCM 7.0 cluster, it is a minor (upgrade to 7.1.5). but I have the following questions:As per my knowledge, I have to upgrade the Publisher, then the subscribers.What is the meaning of upgrading the publisher first? Does it ...

I can't find anything documented about these dhcp packets the 9971 phones are sending out.  Anyone provide a URL?  Is there a way to turn them off on the 9971?  Running CUCM 9.1.1 and 9971 SIP load 9-4-1-9. 2911#debug ip dhcp server packetsApr 23 20:...

we would like to change the logo on all our phones but we would have to walk and touch every phone could i just name the new logo file the exact name as our old logo file upload the new file to cucm? or when i try to upload the new file with the same...