When connecting AgentIC, LQ or any other device over the internet, there are several ways to manage this process through your network's firewall. The following document provides various scenarios you may encounter.
Connecting Agent-IC to LQ via an External Public IP address
Agent IC external connection to a LQ unit through a firewall
For a full list of the ports required to be open for the Clear-Com product to connect, please visit the solution "Minimal Clear-Com Port Requirements."