Nop is descibed in the documentation:
http://sipp.sourceforge.net/doc3.0/reference.html#Create+your+own+XML+scenarios
The strcmp and condexec attributes are new and are not yet documented (I
only managed to get motivated to do documentation before a release).
To use these actions/modifiers,
Just as an FYI to anyone out there struggling with this same issue: I was able
to work around this by embedding an extra line that sends a dummy log mssage
to stdout in the action sections as follows:
recv response=200
action
ereg regexp=.* search_in=hdr header=Contact: