I never tried this but readme says this:
Remote Control Mode
-------------------

In this mode RTP Proxy can be controlled from the remote machine over
network. When it is being used with SIP Express Router (SER), this allows
to force different paths for signalling (SIP) and media (RTP) streams.

The mode can be activated by starting RTP Proxy with `-s' command line
argument:

$ rtpproxy -s <proto>:<address>[:<port>]

proto can be either udp or udp6; address is either IPv4 or IPv6 local
address at which command commands should be accepted or `*' if rtpproxy
should accept commands at all local interfaces; port is UDP port,
if omitted port 22222 is used.

BEWARE: command protocol contains no security or auth measures, so that
you should be using other means to secure RTP Proxy, such as firewall or
even better a VPN between machine runing RTP Proxy and machine wich
runs a software that controls it.

$Id: README.remote,v 1.1 2004/03/01 12:31:55 sobomax Exp $

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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