Updated: 5 Feb 2020

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.

IP Ranges


  • UDP Port: 5060
  • TCP Ports: 5061-5062


  • UDP Ports: 10000 through 20000


Posted in: SIP Trunks