Hi, I should change the actual display name in header From with an other name stored in avp(s:display) . I use uac_replace_from("$avp(s:display)","");, but this function add the new name in the end line of From. Exemple after tcpdump: i like change "aladin" with "1111111111" but i have this line in INVITE request, From: aladin <sip:testerser@x.x.x.x:5060>;tag=64204a12d09be0c^M"11111111111" Have you a solution for this pb. Thanks