lookup jndi ejb3

Hi,
I just deployed a sample ejb3 in jboss 7.1.1
Name of module is ejb3.jar, i see on the log server follow :
"
java:global/ejb3/CalculatorEJB!org.begonia.calculator.CalculatorRemote
java:app/ejb3/CalculatorEJB!org.begonia.calculator.CalculatorRemote
java:module/CalculatorEJB!org.begonia.calculator.CalculatorRemote
java:jboss/exported/ejb3/CalculatorEJB!org.begonia.calculator.CalculatorRemote
java:global/ejb3/CalculatorEJB!org.begonia.calculator.CalculatorLocal
java:app/ejb3/CalculatorEJB!org.begonia.calculator.CalculatorLocal
java:module/CalculatorEJB!org.begonia.calculator.CalculatorLocal
"
My client

public class CalculatorTest {
public static Context getContext() throws NamingException

{ Properties properties = new Properties(); properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory"); properties.setProperty(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming"); properties.setProperty(Context.PROVIDER_URL, "remote://127.0.0.1:4447"); properties.put(Context.SECURITY_PRINCIPAL,"jbossclient"); properties.put(Context.SECURITY_CREDENTIALS,"0123456789"); return new InitialContext(properties); }

public static void test() throws NamingException, InterruptedException

{ Context iContext = getContext(); Object c = iContext.lookup("ejb:/ejb3//CalculatorEJB!org.begonia.calculator.CalculatorRemote" ); System.out.println(((CalculatorRemote)c).sum(1,2)); }

public static void main(String[] args) throws NamingException, RemoteException, CreateException, InterruptedException

{ CalculatorTest.test(); }

}

When i run client, catch exception
Exception in thread "main" java.lang.IllegalStateException: No EJB receiver available for handling [appName:,modulename:ejb3,distinctname:] combination for invocation context org.jboss.ejb.client.EJBClientInvocationContext@10da5eb

When i hide the line
/*properties.setProperty(Context.URL_PKG_PREFIXES,
"org.jboss.ejb.client.naming");*/
run the client i catch exception
javax.naming.NameNotFoundException: ejb:/ejb3//CalculatorEJB!org.begonia.calculator.CalculatorRemote – service jboss.naming.context.java.jboss.exported.ejb:.ejb3."CalculatorEJB!org.begonia.calculator.CalculatorRemote"

Who can help me fix this bug?
thanks.