i do this and seems to work just fine pjsua_msg_data msg_data; pjsip_generic_string_hdr my_hdr; pj_str_t hname = pj_str("HEADER-NAME"); pj_str_t hvalue = pj_str("HEADER VAlue "); pjsua_msg_data_init(&msg_data); pjsip_generic_string_hdr_init2(&my_hdr, &hname, &hvalue); pj_list_push_back(&msg_data.hdr_list, &my_hdr); status = pjsua_call_make_call(id, &uri, 0, NULL, &msg_data, &callIdentifier); Thanks On May 10, 2013, at 2:31 PM, Agustin Lo Castro wrote: Hi, I need to add the following header to my outgoing messages: "P-Asserted-Identity: <sip:4833750>" I tried adding these lines to the function pjsip_call_make_call (located in the pjsip_call.c) I declared these variables: pjsip_generic_string_hdr assert_id_hdr; pj_str_t hdr_name = pj_str ("P-Asserted-Identity"); pj_str_t hdr_value = pj_str ("<sip:4833750>"); and, before pjsua_process_msg_data(TData, MSG_DATA), I added these other lines: pjsip_generic_string_hdr_init2 (assert_id_hdr &, & hdr_name, & hdr_value); pj_list_push_back ((pj_list_type *) & (MSG_DATA-> hdr_list) & assert_id_hdr); Also, in the program that calls the pjsip_call_make_call, I created a variable of type pjsua_msg_data MSG_DATA and initialize it with pjsua_msg_data_init (& MSG_DATA); But I can't see the header in any of the captured packets. Any help is welcome, Thank you very much! _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org<mailto:pjsip at lists.pjsip.org> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org ------ Alejandro Orellana Savant Systems, LLC 45 Perseverance Way Hyannis, MA 02601 +1 (508) 683-2547 (W) +1 (508) 683-2647 (F) Alejandro.Orellana at savantsystems.com<mailto:alejandro.orellana at savantsystems.com> [cid:5EDE9277-6B88-4839-8AFC-9C587277326D at enterprise.886ventures.com] Statement of Confidentiality The contents of this e-mail message and any attachments are confidential and are intended solely for the addressee. The information may also be legally privileged. This transmission is sent in trust, and the sole purpose of delivery to the intended recipient. If you have received this transmission in error, any use, reproduction or dissemination of this transmission is strictly prohibited. If you are not the intended recipient, please immediately notify the sender by reply e-mail or at 508.683-2500 and delete this message and its attachments, if any. Statement of Confidentiality The contents of this e-mail message and any attachments are confidential and are intended solely for the addressee. The information may also be legally privileged. This transmission is sent in trust, and the sole purpose of delivery to the intended recipient. If you have received this transmission in error, any use, reproduction or dissemination of this transmission is strictly prohibited. If you are not the intended recipient, please immediately notify the sender by reply e-mail or at 508.683.2500 and delete this message and its attachments, if any. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130510/35daaa81/attachment-0001.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: PastedGraphic-1.tiff Type: image/tiff Size: 565076 bytes Desc: not available URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130510/35daaa81/attachment-0001.tiff>