Hello, I'm developing an application with pjsua and gstreamer. I've pjmedia disabled (built with the #define PJSUA_MEDIA_HAS_PJMEDIA 0). Still, as I understand pjmedia is still being used by pjsua. Pjmedia still opens media ports. To stop pjmedia opening those ports I'm adjusting the pjsua_acc_config and set the use_loop_med_tp <https://www.pjsip.org/pjsip/docs/html/structpjsua__acc__config.htm#a4aa58f914064be2397463cdeb43dc5c9> to true. Reading further, there is a config variable enable_loopback <https://www.pjsip.org/pjsip/docs/html/structpjsua__acc__config.htm#a0d3b3ffd08d8a162a2ed51810532a5eb>. The documentation recommends to set this to true when use_loop_med_tp is enabled. What does enabling "enable_loopback" do and why should I enable it? Thanks for the help. Regards Jochen Jung