Sounds very strange indeed. If both UAs start sending RTP and you can see that, there should be no problem (unless you have a firewall on your rtpproxy server).

Remote rtpproxy: Read the nathelper module README, you configure the use of UDP transport for control messages instead of socket in your ser.cfg.
g-)

Caxton wrote:

Hi all:

    The document metion that "RTPproxy will not be installed on the SER server, but on a remote machine." If I install SER on "192.168.1.3", and install RTPproxy on " 192.168.1.5". How do they work?

    Now, I install they on a same machine, and I run SER first, then usr command "rtpproxy -l xxx.xxx.xxx.xxx" to force rtpproxy. The SIP client can register behind NAT, but there are some problem with RTP stream. I found that RTP strem is able to relay to this machine, but this machine do not transmit those data to destination!!



      PC(A)                               Server(SER+RTPproxy)                                 PC(B)

                    RTP Stream(A)                                               RTP Stream(B)

1.              ---------------------------->                                    <----------------------------

2.                                         Receive RTP stream A and B

3. Server should transmit RTP stream(A) to PC(B) and RTP stream(B) to PC(A), but this step do not work. (I am not sure that server does not forward the RTP packets or Clients do not receive RTP packet.)

    What is the problem? How should I operate if RTPproxy install on another machine? Because the command "rtpproxy" will not be used on the machine which have installed SER.

    Please help me, thank you.

Regards,

Caxton
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