The default naming in EJB3 will be
<name of the ear file>/<Bean name>/remote
E.g. you deploy application.ear with a bean 'MySLSBean' the default naming is 'application/MySLSBean/remote'
If you want to change the JNDI name you might add @org.jboss.annotation.ejb.RemoteBinding(...) to your Bean-class.
But it is a non standard (EJB) jboss annotation that change from 4.x=>5.x