≡ Port Forwarding
What is port forwarding?
Port forwarding is a set of rules that tells a router to forward packets received on a specific port to a specific IP address. For instance, if you were running a web server, you’d tell your router to forward port 80 to the IP of that server. This would allow people to access that server from the Internet.
How does this apply to VoIP?
VoIP packets are broadcast and received on specific ports. Most vendors use the SIP and RTP standard; SIP: 5060, RTP: 10000-20000. Forwarding these ports in your router ensures that the packets that make up your phone call reach your ATA. This is done to improve call clarity.
*Note: Your vendor may use different ports.
