hi dear all, we have a siemens HIE 9200 softswitch that support SIP, SIP-T and H.248 we are trying to interconnect freeswitch with it if HIE9200 dial out troug freeswitch, is passing the call, but without RTP but if the freeswitch dial out troug the HIE9200, the call is unable to pass with error 500 the trace is here: http://siplabs.net/tracebin/fs-siemens-500.pcap http://siplabs.net/tracebin/fs-siemens-rtp.pcap unfortunatly the freeswitch don't support H.248 otherwise i will control the media gateway (HIG 1100) thanks for any help