Hi, I have that to implement in my company a solution VOIP. I am testing SER/RTPProxy. My problem is in the call of the equipment with IP 192.168.0.20 for another side with IP 200.2xx.xx.xx. In the archive /var/log/message, has the error message ++++++++++++++++++++ ERROR +++++++++++++++++++++++++++++ /var/log/message Feb 27 18:09:47 blacksip ser[3588 ]: ERROR: send_rtpp_command: can't read reply from the RTP proxy Feb 27 18:09:58 blacksip ser[3586 ]: ERROR: send_rtpp_command: can't read reply from the RTP proxy Feb 27 18:09:58 blacksip ser[3586 ]: ERROR: on_reply processing failed ++++++++++++++++++++ ERROR +++++++++++++++++++++++ The project that I intend to implant is similar to the FWD. The version that I am using is: CVS SER 0.8.12-TCP_nonb (i386/linux) CVS rtpproxy 20040107 Athlon 1900+ / 256Mb / 40GB HD REDHat 9.0 Thank You João Carlos Moura