When AES encryption is off, connections are going through without any problem, but when AES encryption is activated wether it is required or when available, I am suspecting that firewall is blocking my connection, I am using cisco router based firewall.
If yes please provide the exact details and the software version used.
If not I can only recommend to contact Cisco.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels. Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's