Hello Carlos Thanks for ur response This did not work Leg b from is still modified and the same as that if leg a Regards Adi Sent from my iPhone On Feb 28, 2022, at 11:47 PM, Carlos Eduardo <kaduww@gmail.com> wrote: You can try export sip_from_header=${sip_from_header} It's going to copy the full content of the header to the B leg Em seg., 28 de fev. de 2022 às 17:34, Adiseshu Channasamudhram <csadi@hotmail.com<mailto:csadi@hotmail.com>> escreveu: Hello FS Team, How can I copy the From header in INVITE from incoming leg to the outgoing leg? Basically i have the carrier send the From header as below [not the clean way] From: <sip:1234567890@1.19.10.3<mailto:sip%3A1234567890@1.19.10.3>>;isup-oli=00;tag=3418741140365741_c2b08.2.4.1638259348522.0_6724417_21166610 I want to make sure i send out the oli in the outgoing INVITE From header. Note that in the incoming From , the oli is outside the uri Thanks a lot in advance Regards Adises _________________________________________________________________________ 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 -- Carlos E. Wagner Tecnólogo em Telecomunicações, Opensips Certified Professional Fone: +55 48 99981-0894 E-mail: kaduww@gmail.com<mailto:kaduww@gmail.com> LinkedIn: https://www.linkedin.com/in/carlos-eduardo-wagner-96bbb433/