RTP treatment

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Olavo Mazuco Candido

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May 26, 2025, 4:24:18 PMMay 26
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Hello!
I would like to know if anyone can help me.
I have a problem with RTP forwarding.
My scenario is
Dsiprouter with two IPs, one public and one private. I am using RTPEngine to handle the audio.
I have a problem where calls with IPs outside the same block as the dSIP public IP do not process audio. From what I have seen, it is the C= that comes with the private IP of the endpoint.
However, in calls where the endpoints are in the same IP block as the dSIP, the call has audio and the C= comes with the public IP

See the images below

call that does not complete, I selected invite/sdp 192.168.91.200 -> 192.168.91.40
447661894-930da75c-b55f-48bd-8aa7-d268856f6087.png

call that completes, I selected the invite/sdp 192.168.91.200 -> 192.168.91.40
447662222-e5c71c74-7d3e-4c7d-b698-afed60ac3171.png
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