I found the problem and decided to post it here:
First, I didnt have a reply route(t_on_reply). I put it and now sessions.py showed both Caller and Called IP addresses. After that, I couldnt get audio from both parts....then, checking the SDP body, I saw that mediaproxy was setting his IP address on the body of SDP as 127.0.0.1. So I put in mediaproxy.ini the following:
[MediaProxy] proxyIP = <my_IP>
Now mediaproxy puts a valid IP on the SDP body and I get audio.
Felipe -- Master Student - Electrical Engineering Department Computer Engineering and Telecommunications Research Group Universidade Federal de Minas Gerais - Brazil
"For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life." John 3:16