hello i try to moditfy the sip sdp to get some user agent working, but setting switch_r_sdp doesn't work the way i try it on the loopback interface i do see the command of setting the variable like this sendmsg call-command: execute execute-app-name: set execute-app-arg: <![CDATA[switch_r_sdp=v=0 o=root 713636917 713636917 IN IP4 x.x.x.x s=call c=IN IP4 x.x.x.x t=0 0 m=audio 17300 RTP/AVP 0 9 99 3 18 4 101 a=rtpmap:0 pcmu/8000 a=rtpmap:9 g722/8000 a=rtpmap:3 gsm/8000 a=rtpmap:18 g729/8000 a=fmtp:18 annexb=no a=rtpmap:4 g723/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 ]]> (btw this example sdp is ok) but on the console i get the error [ERR] switch_ivr.c:469 Invalid Command! and the b-leg doesn't get the modified sdp. what could i get wrong here? br -- Ing. Christian Löschenkohl Technische Leitung, Forschung & Entwicklung VoIP xpirio Telekommunikation & Service GmbH Lakeside B04 9020 Klagenfurt Austria T +43 (0) 5 77 11 - 1000 F +43 (0) 5 77 11 - 1002 E christian.loeschenkohl@xpirio.com