Thanks Brian, I’ve read that it is possible to insert any line to the SIP header. Is it true ? If so, how to do it ? Adrian. De : Brian West <brian@freeswitch.com> Envoyé : lundi 11 octobre 2021 15:18 À : Adrian Worutowicz <adrian.worutowicz@esifrance.net> Cc : FreeSWITCH-users@lists.freeswitch.org Objet : Re: [Freeswitch-users] User-to-User RFC 7433 Code will probably need to be written for that. /b On Mon, Oct 11, 2021 at 8:17 AM Adrian Worutowicz <adrian.worutowicz@esifrance.net<mailto:adrian.worutowicz@esifrance.net>> wrote: Hello, I need to add the User-to-User field to the SIP header – for incoming calls. I have not managed to do it (neither for incoming nor for outgoing calls). In ./conf/dialplan/default.xml, <extension> section, I added : <action application="set" data="sip_h_User-to-User=123"/> or <action application="set"><![CDATA[sip_h_User-to-User=${sip_Call_ID};tenant=1101;DID=${sip_to_user}]]></action> No result. In sofia_presence.c, I’ve seen some code for "User-to-User", so it should be possible. But how to do it ? Best regards, Adrian. _________________________________________________________________________ The FreeSWITCH project is sponsored by SignalWire https://signalwire.com Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services. Build your next product on our scalable cloud platform. Join our online community to chat in real time https://signalwire.community Professional FreeSWITCH Services sales@freeswitch.com<mailto:sales@freeswitch.com> https://freeswitch.com Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org<mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users https://freeswitch.com -- Brian West | Co-founder and Developer Need Commercial support? email sales@freeswitch.com<mailto:sales@freeswitch.com> FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045<https://maps.google.com/?q=17345+Civic+Drive+%232531+Brookfield,+WI+53045&entry=gmail&source=g> Email: brian@freeswitch.com<mailto:brian@freeswitch.com> Mobile: 918-424-9378 Website: https://www.FreeSWITCH.com<https://www.freeswitch.com/> [cid:~WRD0000.jpg]<https://www.facebook.com/freeswitch>[cid:~WRD0000.jpg]<https://twitter.com/freeswitch>