siproxd "in front" of a nat router

Hi Everyone!

I tried the siproxd configuration of running it "in front" of the
router as described in the online docu. Unfortunatey I cannot make
calls for phones that are inside the same private network of the nat
router. Looking at the traces it seems that the phones were sending
the rtp stream to public ip of the nat router.

IPphone --->siproxd(private ip)-->nat router(public ip)

But the nat router does not know where to route the rtp stream.

This happens because after siproxd the sdp connection information and
the sip contact header becomes the public ip of the nat router. Has
anyone encountered this same problem?What do you think is the work
around to this?

Advance thanks to everyone!
_Jeff


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