Hi, I am using Kamailio (4.0.3 (x86_64/linux)) against an MSS in the mobile core network. Kamailio receives an INVITE with following bodies: Content-Type: application/sdp .... Content-Type: application/ISUP;base=itu-t92+;version=itu-t92+. .... How can the latter part i.e. the ISUP body be *removed *so that I just keep the sdp and relay. I have gone through the docs for textops, mangler, sdpops. What other functions are there for sdp removal apart from *sdp_remove_line_by_prefix.* * * It's a bit impressive that Kamailio could at least respond to all such multi-body (SDP+ISUP) INVITE messages while asterisk 1.8 (the one in debian apt) could not. * * Best regards, Adnan