Dear Friendswe are upgrading our CUCM 11.5 to 12.5 in which as we know the Smart Licence is must for 12.5, is the SWSS contract support must to upgrade Traditional licence to Smart Licence, if we dont have an active SWSS Contract what are all the Con...

I Need to downgrade the firmware version of my new version latest 7821 ip phone to firmware version 9 for compatability with existing IP Phones and CUCM , , , ,Need to know can we do it and in a effective way if we do so can we use all the existing f...

Hi all   my infrastructure is of almost 1000 devices with cisco devices i face a problem the whole infrastructure is down for 5 to 10 mins suddenly and then gets up automatically i am really confused in this interval i cant ping , no internet but get...