Hi Stefano, The objective of this excercise is to bring the functionality that is offered by Tango to JBossWS. So, the question should really be asked differently, i.e. what spec is currently implemented by tango? The answer to that is https://wsit.dev.java.net/specification-links.html So, even WS-RX is the most advanced spec we need to look at the spec that is the basis of the current tango implementation. cheers -thomas On Mon, 2007-02-26 at 17:01 +0100, Stefano Maestri wrote: -- xxxxxxxxxxxxxxxxxxxxxxxxxxxx Thomas Diesler Web Service Lead JBoss, a division of Red Hat xxxxxxxxxxxxxxxxxxxxxxxxxxxx