[Users] force_rtp_proxy() problem.

Ray Van Dolson rayvd at digitalpath.net
Wed Aug 3 01:20:49 CEST 2005

On Wed, Aug 03, 2005 at 12:15:24AM +0200, Klaus Darilion wrote:
> Hi Ray!
> On which interface is rtpproxy listening? Try starting rtpproxy with 
> command line options to bind on
> This way, force_rtp_proxy should insert the 208... IP address into the SDP.

Thanks Klaus... getting closer--I think.  I wonder if there is any way to run
two instances of rtpproxy?  Voice packets are halfway flowing correctly, but
not quite:

Outbound call from SIP ATA is established.

Asterisk shows RTP data going from ->

However a tcpdump on OpenSER eth1 shows RTP data with source IP
->  The source IP should be being rewritten as, but
it is not.  In addition I don't get any voice data back from the SIP ATA
leading me to believe the force_rtp_proxy is somehow passing the public IP
address back to my SIP ATA device (which is unroutable).

Must be a way to handle this both ways.  My config file is getting pretty
crazy so I may wipe everything out and start from scratch and try to keep it


> Ray Van Dolson wrote:
> >Thanks for the help earlier Bogdan.
> >
> >I've gotten things working for the most part, but am having a problem with 
> >the
> >force_rtp_proxy function.
> >
> >Once again, here is my setup:
> >
> > -
> >
> >OpenSER
> > - eth0:
> > - eth1:
> >
> >Asterisk
> > - eth0:
> > - eth1:

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