That document has a typo. You should use jndiBinding and not jndiName:
@RemoteBinding (jndiBinding = "custom/remote/MySession")
The EJB3 Trail http://trailblazer.demo.jboss.com/EJB3Trail/ has some examples. Like this one:
Thx for the hint buddy,
it is a big typo indeed......:-)
One more thing:
I assume some Jboss Admins / employees browse these forums from time to time?
Could you please fix this error in the documentation?