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<p class="MsoNormal">Is there no one who knows if there is a way to turn off the norefersub setting?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Supported: norefersub <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This happens in the TRYing, OK, and other commands in response to the INVITE.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For chan_sip, I noticed it does not send the norefersub. As a result, Cisco then sends NOTIFY packets with TRYing, Ringing, OK inside them. This basically gives the chan_sip code the ability to know if the REFER (Transfer) is succeeding
or not.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dan<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> asterisk-users <asterisk-users-bounces@lists.digium.com>
<b>On Behalf Of </b>Dan Cropp<br>
<b>Sent:</b> Monday, March 25, 2019 4:03 PM<br>
<b>To:</b> asterisk-users@lists.digium.com<br>
<b>Subject:</b> [asterisk-users] Asterisk Transfers<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Does anyone know if there is a way to disable the norefersub for PJSIP?<o:p></o:p></p>
<p class="MsoNormal">It appears this is causing problems with a test we’re running with Cisco.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A wireshark trace from a system where the transfer with Cisco works versus a trace with Asterisk/Cisco shows one big difference being the supported: norefersub
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The REFER Accepted response is received by Asterisk.<o:p></o:p></p>
<p class="MsoNormal">However, Cisco doesn’t send the NOTIFY messages with 100 Trying followed by 404 Not Found.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">From what we’ve been able to determine, this is a direct result of<o:p></o:p></p>
<p class="MsoNormal">200 OK packet including<o:p></o:p></p>
<p class="MsoNormal">Supported: 100rel, timer, replaces, norefersub<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Specifically, the norefersub.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dan<o:p></o:p></p>
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