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<p class="MsoNormal">Hi List<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a problem with callworwarding and accounting.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">First, here’s my model:<o:p></o:p></p>
<p class="MsoNormal">MY USERS --> OPENSIPS (registrar, accounting, router, nat, …) --> ASTERISK (transcoder, T38) --> SIP TRUNK for pstn (EXTERNAL PROVIDER)<o:p></o:p></p>
<p class="MsoNormal">I use asterisk because my provider doesn’t accept any codec so I transcode everything to G711a.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is my complete working config:<o:p></o:p></p>
<p class="MsoNormal"><a href="http://voip.fabryb.com/opensips_proxy.m4">http://voip.fabryb.com/opensips_proxy.m4</a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://voip.fabryb.com/asterisk_sip.conf">http://voip.fabryb.com/asterisk_sip.conf</a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://voip.fabryb.com/asterisk_extensions.conf">http://voip.fabryb.com/asterisk_extensions.conf</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">opensips configuration is based on Live VM (1.7.0) which I upgraded to 1.7.2 and compiled module b2b_logic because it was not present.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please ignore block #---- handle country -----# of opensips<o:p></o:p></p>
<p class="MsoNormal">I know it could be done better, but I was in hurry :(<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a problem with opensips<->asterisk:<o:p></o:p></p>
<p class="MsoNormal">when I do the forward asterisk sees a new request incoming with the same callid of the first leg and sends a cancel to opensips and goes on with the call by itself.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To avoid that behaviour I tried to setup “topology hiding” both with dialog module and b2bua module:<o:p></o:p></p>
<p class="MsoNormal"><a href="http://voip.fabryb.com/opensips_proxy.m4.b2b">http://voip.fabryb.com/opensips_proxy.m4.b2b</a><o:p></o:p></p>
<p class="MsoNormal"><a href="http://voip.fabryb.com/opensips_proxy.m4.tophid">http://voip.fabryb.com/opensips_proxy.m4.tophid</a><o:p></o:p></p>
<p class="MsoNormal">without complete success.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">With dialog module topology hiding asterisk will still behave like there wasn’t.<o:p></o:p></p>
<p class="MsoNormal">With b2bua module topology hiding asterisk will obviously behave correctly because it sees completely new transaction but I have accounting problems:<o:p></o:p></p>
<p class="MsoNormal">invites are accounted with empty to_tag and byes are not accounted at all.<o:p></o:p></p>
<p class="MsoNormal">I tried to account them manually in local_route and b2b routes but I get a non-empty to/from tag and I can’t get rid of it before manual acc_db_request.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am probably doing something wrong between asterisk and opensips because I don’t think all this topology hiding is really needed.<o:p></o:p></p>
<p class="MsoNormal">Just the part of opensips_proxy.m4.tophid where I implemented the multileg accounting and some extra to tell asterisk not to cut short opensips.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does somebody have an idea?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks everyone for helping!<o:p></o:p></p>
<p class="MsoNormal">Fabrizio<o:p></o:p></p>
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