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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I know you’re unable to do routing or signaling in the local route, so I’m hoping someone can help me think of a workaround.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My OpenSIPS proxy has 2 IP addresses on the LAN and 1 on the WAN. When a SIP trunk sends an invite to my proxy, it forwards that invite out a specific LAN IP address, so Asterisk recognizes it as from the PSTN. When an external UAC sends
a registration request to the proxy, it’s forwarded to Asterisk from the other LAN IP address, so Asterisk recognizes it as a UAC to authenticate. I use the mid_registrar module in OpenSIPS to save the location of the UAC.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The problem is if the UAC becomes unresponsive and the max_pings_lost threshold of the nathelper module is reached, OpenSIPS sends a registration with an expiration of 0 to Asterisk. However, it’s sent with the wrong source IP address,
and Asterisk does not recognize it as an AOR to update.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve tried modifying the local_route to change the $fs variable, but this does not work.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">local_route {<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (is_method("REGISTER")) {<o:p></o:p></p>
<p class="MsoNormal"> #Asterisk is expecting Registrations from UAC phones to come from 10.x.x.x<o:p></o:p></p>
<p class="MsoNormal"> $fs = "udp:10.x.x.x:5060";<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-Sam<o:p></o:p></p>
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