Hi, for sake of Vaclav's courage, let me introduce the "SIP Analysis & Testing tools". This is a set of very powerful utilities that may help you to do SIP call flows analysis. It can do SIP dialogs and transactions matching and analysis in large pcaps, create pretty call flow diagrams, check and verify SIP message content (headers, parameters,..) and many more.... It's available on: https://github.com/vkubart/sipat For more details, please ask Vaclav Kubart (vaclav.kubart(a)iptel.org). SIP Analysis & Testing tools ============================ This project offers set of tools for testing SIP. Dependencies (ubuntu packages) ============ libosip2-dev libpcap-dev libxml2-dev xsltproc cfanal ====== Call flow analyzer able to draw call flows from PCAP and verify callflows against given definition. Usage: cfanal -r captured-traffic.pcap -a 10.38.14.73=uac -a 10.38.14.74:5062=uas -print-cf drawing.cf cf2svg drawing.cf drawing.svg svg2png drawing.svg drawing.png callflow_diagrams ================= XSL template for painting call flow diagrams. ..... Thank you Vaclav a lot! -Vlada