the genericpackager example

Dear All,

As you know, there is an example for the ISOPackager in the jPOS 
download called the genericpackager. What is the format of the file 
which is supposed to go with anyone of the packagers ? I mean, there 
are many package descriptors in the xml format, but I cannot find 
anyone of them fitting to the hexdump of the iso message which I have, 
so I am asking, could you give an example of a message which could be 
interpretted by anyone of the xml files ?
Also, there is supposed to be no TPDU in the message ?

Regards,
tasbihmr