There is a jar-file with EJB-stateless session beans and WAR-file with JSF (JSP- and backed-bean files are in it). They both packaged standalone.
I have tried to inject @EJB injection of a session bean (which is in the jar-file) into a backed bean (which is in the war-file). But there were errors during war-file deployment. As far as I know, it was impossible to make use of @EJB injection, if EJB-beans and JSF were in different standalone (not in the same ear-file) files.
That's not available in JBoss AS-5 https://jira.jboss.org/jira/browse/JBAS-6332
Thank you for your link, jaikiran pai. Thus this feature will work in JBOSS AS 6. Thanks a lot again.