<div>Hi Greger,</div>
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<div> I found the exact problem which have been paining me.</div>
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<div>1) the nated Sip-proxy;</div>
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<div>its sending the route headers as if it forgets it staying behind the Nat.and sending the call as </div>
<div>some thing like this </div>
<div>invite <a href="mailto:99106883@81.21.33.35">99106883@81.21.33.35</a> ----this is my SER - server</div>
<div>record<<a href="http://192.168.1.100">192.168.1.100</a>>------- this is nated sip-proxy address</div>
<div>contact<<a href="http://192.168.1.100">192.168.1.100</a>>-----contact to this address only</div>
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<div>SER-server is frowarding the call to pstn Gateway as it recieves and just rewriting the host name.</div>
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<div>and the other problem(I think)</div>
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<div>2) PSTN Gateway.</div>
<div>even when call connects it is adding the strict route headers as it recieves from SER-server</div>
<div>and when it sends 200 0k after connecting the call </div>
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<div>it is not getting back or SER-server is also not getting back the "ACK" from the nated proxy</div>
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<div>because the nated proxy itself add the contact header as (private-ip ) ofcourse it is following strictly the SIP-PROTOCOL</div>
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<div>so,these are the two problems i found ,</div>
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<div> Some providers are providing calls to this nated sip-proxy -------> How ????</div>
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<div>Why the SER-server is also not following the path where "INVITE" message came ?????</div>
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<div>How to stop the Nated Sip-proxy to stop sending the headers in "INVITE"message not including the record route or contact headers in the message --- ??????</div>
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<div>Or is there any way to do in SER-server itself ( majorly prefered) not to contact private ip-address and to follow the next address which is NAT-IP ---???????</div>
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<div>(I think its foolish question )---> Or is there any way to get registered another sip-proxy in location database.----???????</div>
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<div>Please suggest me some thing to get out of this problem.</div>
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<div> Thank You.</div>
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<div>Regards,</div>
<div>Ravi.</div>