[cisco-voip] How long does it take to upgrade to CUCM 7.1.5bSU2 on MCS7835?

[Ahmed]

server upgrade on about 2h30m , restart on 20-30 min, if phones firmware upgrade will be done, depend on number of phones
----- Original message -----
> Has anyone upgraded CUCM to version 7,1,5bSU2 restricted? I notice the 
> upgrade image is about 3.4 GB and wondering how long would it take to 
> upgrade this completely on MSC7835 publisher server (including reboot 
> and getting all phones reregistered.
> Any feedback from experience user is appreciated. Thanks
> 
> Denny
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