I am looking for safest scenario & how long it takes to upgrade following:
- 1 Pub and 4 Subs of Cisco UCM 10.5 ( include PLM 1.5) to 11.5
- 1 Pub and 1 Sub of Unity Connection 10.5 to 11.5
- 1 Pub and 1 Sub of Cisco CER 10.5 to 11.5
- 3 Cisco Media Sense server 10.5 to 11.5
- 2900, 3900 , VG204 , VG224
Solved! Go to Solution.
Start by looking at the compatibility info of each product in the target release to determine if you need to do it in a certain order, the CUCM upgrade guide contains upgrade paths and provides estimates for various upgrade options.
If we upgrade UCM 10.5 to 11.5 and switch version to 11.5
when we see some issue, can we always go back to 10.5 ( switch version) and no problem ?