IP Telephony and Phones

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Intermittent no ring on 78xx after firmware upgrade to sip78xx.12-6-1-0001-668

CUCM 11.5.1-15900-18, 1 Publisher, 6 Subscribers, 2 TFTP, 2 MOHI upgraded the firmware on my 78xx phones from sip78xx.12-5-1SR3-74 to 12-6-1-0001-668 and since then, I've received numerous complaints from contact center agents using 7841s of intermit...

Restore Publisher from subscriber

Dears  Hello all and i hope i can find the best guide here I have a company which the publisher went down completely and there is no backup the only server is up the subscriber  Now i want to build the publish again without wiping out the configurati...


I purchased 2 CP-7841 phones, I'm trying to set them up to use with my VOIP provider, the phones asking for Activation code or domain, what do I enter to make the phone usable?

CUCM User Config - difference between CTI Controlled Profiles and Controlled Profiles

Hi,In the CUCM end user configuration page in the Device Information section you can associate Extension Mobility profiles with the user in the CTI Controlled Device Profiles box.In the Extension Mobility section you can also associate Extension Mobi...