asterisk users - May 2005 - txfax return code

I needed a system to allow my windows clients to hit print and
eventually result in a fax being sent via asterisk. I used smbfax and
modified it to allow the phone number to be supplied by means of an
email and it all works fine....


...except I do not know how to read off the TxFAX application exit
code to determine if the fax was successfully sent or not. I'm
currently using .call files to auto dial the fax out.


Any ideas?