Yes ... I'm using EJB 3 with JAX-RPC. I dont know what to do, do you have an example of a JAX-RPC client? To switch to JAX-WS, what do I have to do in the EJB? Just take out the @SOAPBinding? Follow my EJB class: @Stateless @WebService(name="FabioSession") @SOAPBinding(style= SOAPBinding.Style.RPC) public class FabioSessionBean implements FabioSession, FabioSessionWS { @WebMethod public String hello() { return "Hello"; } } and the client: ServiceFactory factory = erviceFactory.newInstance(); Service remote = factory.createService(url, qname); FabioSession fabio = (FabioSession) remote.getPort(FabioSession.class); System.out.println("Accessed local proxy: " + fabio); System.out.println("Receiving: " + fabio.hello()); View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4085602#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...