Hi folks, I've made a video call from a SIP softphone to a PBX ACD queue that was bridged by FS. I set the PBX(AASTRA) as a gateway in FS. Here is the scenario. Softphone --> FS --> PBX --> IVR |---> Agent SIP phone The call can be established with no video. If I make the call bypass FS like this: Softphone --> PBX --> IVR |---> Agent SIP phone The video call can be make successfully. All these device are all behind NAT. I set the parameters renegotiate-codec-on-reinvite=true, inbound-late-negotiation=true and still no video. I can't figure out why the video missed. Here is the FS siptrace. http://pastebin.freeswitch.org/21879 Thanks in advance. Jimmy --- 由於 avast! 防毒軟體已開啟防護，所以此封電子郵件將不受病毒及惡意軟體的侵害。 http://www.avast.com