I am looking for a way to download an ISO image with the CUCM (Cisco unified Communications Manager) 220.127.116.110-1 upgrade. Does anyone know where I can find that? We currently have ver. 6.1.2 running on our Publisher (Pub). The Subscriber (Sub) has an older version (6.1.2) and I need to upgrade the Sub to 18.104.22.1680-1. I just don't know where I can download it from. Please help.