Vonage – Ports

Opening these ports (UDP) and forwarding them to the IP address of your Vonage MTA device using your router can possibly help call clarity and connection issues.

RTP (Voice) Traffic: Ports 10000-20000 UDP. When a call is made, a random port between 10000 and 20000 is used for RTP (Voice) traffic. If any of these ports are blocked, you may experience one way or no audio.


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