[sr-dev] Re: [kamailio/kamailio] Missing two way audio when using Yealink. kamailio + rtpengine + freeswitch/fusionpbx (Issue #4270)

jaspreet-eltropy left a comment (kamailio/kamailio#4270)

Hi, thanks for the reply.

After adding a STUN server and setting the codec priority to PCMU, PCMA, G722 on the Yealink phone, it started working. Is this the right approach, or should I be looking for another solution?

Even with this setup, it only works one-way when both devices are on the same network, but works fine when the devices are on different networks.

Here is the PCAP from both Kamailio and RTPengine **before adding STUN**.

[pcap.zip](https://github.com/user-attachments/files/20521273/pcap.zip)