flexfax: Determing Time it took to send a fax

["Lee Wilson" <devnull@ad1440.net>]

    Is there any way, using faxstat, to determine the amount of time it took
to send a job?  NOT the TOTAL time, including retries, etc, but JUST the time
that they were on the phone with a valid connection.  We're trying to figure
out how much long-distance time each fax uses, so the amount of time spent in
retries, etc is irrelevant.

    I thought setting the JobFmt string with a %z might be the way, but it
seems to be blank sometimes, which is unacceptable.  So, I guess I'm also
curious why this would be blank, but also the way it measures the time to send
the job.

    Does anyone else have any suggestions for this?