Audio / media traffic flows through various gateways within Simtex, hence if you are having issues with one-way or no-way audio/media you may need to open up traffic from the following ranges and ports.
- UDP Port: 5060
- TCP Ports: 5060-5062
- UDP Ports: 10000 through 20000
- UDP Ports: 40000 through 59000
- UDP Ports: 4000-4999