Cisco Jabber works pretty nicely, the voice and video quality is good, but on thing, the admin pages for CUCM, CUC, and CUCM IM&P sometimes loads fast, but other times, it will take a while, the Jabber client will not answer calls, and even sometimes not hang up the calls properly. I am using a Cisco CSR 1000v Router as the default router for Cisco CUCM, CUC, CUCM IM&P, and my phones, I have another network that serves internet to everything else that I have, I have a static route setup on the Main Router and the Call Router (which is the Cisco CSR 1000v), and that is how everything on the Call Network is getting internet, and I can access the Call Network from the Main Network. Anyway, I have no idea what else to do, I have tried raising the bandwidth on the virtual ports on the Call Router, I have tried everything I could think of.
Network Topology: ISP > Main Router > Call Router > Switch > Phones
Not sure if I understand this part “I have a static route setup on the Main Router and the Call Router (which is the Cisco CSR 1000v), and that is how everything on the Call Network is getting internet”. Why do you need internet access for your call network?