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hello dears </div>
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when i'm using kamailio 5.2 as IMS i'm facing the following NAT issue :</div>
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<li style=""><font color="#000000" style=""><font face="calibri, helvetica, sans-serif" style="font-family: Calibri, Helvetica, sans-serif;"><span style="font-size: 12pt;">when p-cscf </span></font><font face="Calibri, Helvetica, sans-serif">handle a call</font><font face="calibri, helvetica, sans-serif" style=""><font face="Calibri, Helvetica, sans-serif"><span style="font-size: 12pt;"> from
user1</span></font><font face="Calibri, Helvetica, sans-serif"><span style="font-size: 12pt;"> to user2 that pre-registered on private address "192.X.X.X" (on another LAN) the user can't receive the invite message .</span></font></font></font></li></ul>
<font color="#000000" face="Calibri, Helvetica, sans-serif">in another word:<br>
proxy ip : 10.192.X.X</font></div>
<div style=""><font color="#000000" face="Calibri, Helvetica, sans-serif">user1 ip : 10.X.X.X</font></div>
<div style=""><font color="#000000" face="Calibri, Helvetica, sans-serif">user2 ip : 192.X.X.X</font></div>
<div style=""><span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif;">the call scenario : user1 ---invite----> user2</span><span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif;"> (not arrived</span><span style="color: rgb(0, 0, 0); font-family: Calibri, Helvetica, sans-serif;">)</span><br>
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<li style=""><font color="#000000" style=""><font face="calibri, helvetica, sans-serif" style=""><font face="Calibri, Helvetica, sans-serif"><span style="font-size: 12pt;"><font color="#000000"><font face="calibri, helvetica, sans-serif" style=" font-family: Calibri, Helvetica, sans-serif"><span style=" margin: 0px; font-size: 12pt">when
p-cscf </span></font><font face="Calibri, Helvetica, sans-serif">handle<span> </span>a call</font><font face="calibri, helvetica, sans-serif"><font face="Calibri, Helvetica, sans-serif"><span style=" margin: 0px; font-size: 12pt"> from user2 that pre-</span></font>registered<font face="Calibri, Helvetica, sans-serif"><span style=" margin: 0px; font-size: 12pt"> on
private IP <span style=" background-color: rgb(255, 255, 255); display: inline !important">"192.X.X.X" (on another LAN) t</span>o user1 the user receive the invite message .</span></font></font></font></span></font></font></font></li></ul>
<font color="#000000" face="Calibri, Helvetica, sans-serif"><font color="#000000" face="Calibri, Helvetica, sans-serif" style=" background-color: rgb(255, 255, 255)">the call scenario : user2 ---invite----> user1 (arrived)</font></font>
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<li style=""><font color="#000000" style=""><font face="calibri, helvetica, sans-serif" style=""><font face="Calibri, Helvetica, sans-serif"><span style="font-size: 12pt;"><font color="#000000"><font face="calibri, helvetica, sans-serif"><font face="Calibri, Helvetica, sans-serif"><span style=" margin: 0px; font-size: 12pt">when
both of the user on different LANs the message 200 OK doesn't arrive to proxy :\ </span></font></font></font></span></font></font></font></li></ul>
<font color="#000000" face="Calibri, Helvetica, sans-serif">so based on that does any one has an experiment with NAT handling & nathelper module and how to configure it on P-cscf .</font></div>
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<div style=""><font color="#000000" face="Calibri, Helvetica, sans-serif">thanks in advance </font></div>
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