Upgrade the phones firmware first to the one installed on cucm 10 Sent from iPhone
> On Jul 21, 2014, at 7:50 PM, Karen Johnson <karen.johnson...@yahoo.ca> wrote: > > folks, > > we have plan to upgrade UCM, CUC, Presence from version 8.6 to version 10.5 > (around 1000 users) > And we are using new server upgrade. > > - I am looking for advice on detailed steps ? > -what is the best scenario to minimize the downtime ? > - do I need to use PCD ? > > tks, > K > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc
_______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc
