Hello All,   I have a customer who has CUCM, Unity and Presence server running 8.6 version. Customer has bought new hardware to replace the existing infrastructure.   Current: CUCM and Unit on 1 server Presence on Another server They would like to re...

All, I'm planning to upgrade CUCM 8.6 to 11.5 and just wondering if anyone can give me some tips with planning would be appriciated. Current setup: - CUCM 8.6 with Cisco Unity Connection application - Additional standalone application - Pre...