That was it! Thank you! Everything is now working as expected. Crazy. The amount of time is spent modifiing sip-headers and record-route headers, and all it took was one simple setting in the profile. Someone should write like a wiki article for connecting fs to teams 🙂 thank you both very much! have a nice sunday! regards, ________________________________ Von: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> im Auftrag von Matteo via FreeSWITCH-users <freeswitch-users@lists.freeswitch.org> Gesendet: Donnerstag, 1. Oktober 2020 18:09 An: freeswitch-users <freeswitch-users@lists.freeswitch.org> Betreff: Re: [Freeswitch-users] Microsoft Teams integration _________________________________________________________________________ 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 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 http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users https://freeswitch.com