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<p class="MsoNormal">Good afternoon Ladies and Gentlemen,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m using FreeSWITCH (1.7.0 git cae2553 2015-12-11 00:23:48Z 64bit) as B2BUA between Kamailio and our own Server. Our Server is attached to FreeSWICH via ESL.
<o:p></o:p></p>
<p class="MsoNormal">From Kamailio into our own Server it is connecting w/o problems. But when I initiate a call from our Server to Kamailio via FreeSWITCH I’ve a weird reaction:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Network-Overview:<o:p></o:p></p>
<p class="MsoNormal">PSTN(192.168.1.30) <span style="font-family:Wingdings">à</span> Kamailio(192.168.1.150/10.250.5.74)
<span style="font-family:Wingdings">à</span> FreeSWITCH(10.250.5.72) <span style="font-family:Wingdings">
à</span> Our Server(10.250.5.67) <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1st Initial Invite to FS:<o:p></o:p></p>
<p class="MsoNormal">INVITE sip:7@10.250.5.72 SIP/2.0<o:p></o:p></p>
<p class="MsoNormal"> Via: SIP/2.0/UDP 10.250.5.17:5090;branch=z9hG4bK.GSRDySx-y;rport<o:p></o:p></p>
<p class="MsoNormal"> From: <sip:1001@10.250.5.72>;tag=nDaJDf3lz<o:p></o:p></p>
<p class="MsoNormal"> To: sip:7@10.250.5.72<o:p></o:p></p>
<p class="MsoNormal"> Route: <sip:10.250.5.72:5080;lr><o:p></o:p></p>
<p class="MsoNormal"> Content-Type: application/sdp<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">7 is mapped to go to our Server and our Server then is trying to connect to a UA (2031) at PSTN via FreeSWITCH gateway(Kamailio):<o:p></o:p></p>
<p class="MsoNormal">INVITE sip:2031@10.250.5.74:5070 SIP/2.0<o:p></o:p></p>
<p class="MsoNormal"> Via: SIP/2.0/UDP 10.250.5.72:5070;rport;branch=z9hG4bKmgrc4De2Q0ySN<o:p></o:p></p>
<p class="MsoNormal"> From: "" <sip:1001@<b><span style="background:yellow;mso-highlight:yellow">[10.250.5.72:5070]</span></b>>;tag=U5jj715ZB6maK<o:p></o:p></p>
<p class="MsoNormal"> To: <sip:2031@10.250.5.74:5070><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This Invite was built by FreeSWITCH and I could confirm that the „SIP-Invite“ sent via ESL to FreeSWITCH from our Server was correct but as you can see here FreeSWITCH „malformed“ the From-Header with the
<b>square brackets</b> and due to that I’m getting error from PSTN later:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">SIP/2.0 400 Bad Request<o:p></o:p></p>
<p class="MsoNormal"> Warning: 399 192.168.1.30 "Malformed headers : From "<o:p></o:p></p>
<p class="MsoNormal"> To: <sip:2031@10.250.5.74:5070>;tag=ae0f6cb7ca85c1fb958bd8bed1f9b7b7<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Here some config data that is set in FreeSWITCH:<o:p></o:p></p>
<p class="MsoNormal">Vars.xml:<o:p></o:p></p>
<p class="MsoNormal"> <X-PRE-PROCESS cmd="set" data="domain=10.250.5.72"/><o:p></o:p></p>
<p class="MsoNormal"> <X-PRE-PROCESS cmd="set" data="external_sip_port=5070"/><o:p></o:p></p>
<p class="MsoNormal"> <X-PRE-PROCESS cmd="set" data="internal_sip_port=5080"/><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sip-profiles/external/testpbx.xml:<o:p></o:p></p>
<p class="MsoNormal"><include><o:p></o:p></p>
<p class="MsoNormal"> <gateway name="testpbx"><o:p></o:p></p>
<p class="MsoNormal"> <param name="realm" value="10.250.5.74:5070"/><o:p></o:p></p>
<p class="MsoNormal"> <param name="from-domain" value="10.250.5.72:5070"/><o:p></o:p></p>
<p class="MsoNormal"> <param name="proxy" value="10.250.5.74:5070"/><o:p></o:p></p>
<p class="MsoNormal"> …<o:p></o:p></p>
<p class="MsoNormal"> </gateway><o:p></o:p></p>
<p class="MsoNormal"></include><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sip-profiles/external.xml and internal.xml:<o:p></o:p></p>
<p class="MsoNormal"> <param name="rtp-ip" value="10.250.5.72"/><o:p></o:p></p>
<p class="MsoNormal"> <param name="sip-ip" value="10.250.5.72"/><o:p></o:p></p>
<p class="MsoNormal"> <param name="ext-rtp-ip" value="10.250.5.72"/><o:p></o:p></p>
<p class="MsoNormal"> <param name="ext-sip-ip" value="10.250.5.72"/><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can anyone help why FreeSWITCH is doing this or can point to a class where the the From Header is built? Maybe someone knows a solution?<o:p></o:p></p>
<p class="MsoNormal">Here you can find full SIP-Trace Logs and Full FreeSWITCH Debugging Log:
<span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><a href="https://we.tl/FtPuknRrSw"><span style="color:#1294DC;text-decoration:none">https://we.tl/FtPuknRrSw</span></a></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:DE">Very Respectfully<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:DE">Dimitry Nagorny<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;mso-fareast-language:DE">Trainee</span><span lang="EN-US" style="font-size:8.0pt;color:#7F7F7F;mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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