Hi Calvin, This is the out-of-date tool I had in mind. It does not produce correct diagrams for me, and moreover, seems to be out of touch with modern tooling: sasha at tlaquepaque ~/callflow-20120624-180> ./callflow ~/bad.pcapng Duplicate dissectors sip and sip.tcp for protocol SIP in dissector table ssl.port tshark: "-V" is neither a field nor a protocol name. Duplicate dissectors sip and sip.tcp for protocol SIP in dissector table ssl.port tshark: "a" was unexpected in this context. Duplicate dissectors sip and sip.tcp for protocol SIP in dissector table ssl.port tshark: "a" was unexpected in this context. awk: ./scripts/long2html.awk:244: fatal: expression for `>' redirection has null string value callflow: warning: no "order" file found -- using auto generated DPI: 90 Background RRGGBBAA: ffffffff Area 0:0:25:100 exported to 23 x 94 pixels (90 dpi) Bitmap saved as: /home/sasha/bad/callflow.png sed: -e expression #1, char 12: unknown option to `s' I'm sure with a little hacking one could probably get it to work, but it's clear that this hasn't been maintained for a few years. -- Alex -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/