Re: [Serusers] Theory behind a media proxy and NATed UA

uhm..... I didn't know that. That is a very good explanation. If it has to start sending RTP, then the media proxy now knows what port it is using in tha NAT box. I thought that after the 200 OK, the nated UA would wait for audio to come, since it sent all the parameters in the SDP body. Thanks for the explanation. 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