How can I enable Router to allow end device to join network while end device is out of coordinator range

How can I configure to enable Router to allow end device to join network while end device is out of coordinator range ?

That is a matter of just setting NJ to a value greater than 0 on your router.

Hi,
I am new bee to Xbee community. I just followed your idea. Here 's my configuration.
Coordinator : Set NJ to 78 (2 min)
Router : Set NJ to FF (permanently allow joining)

And I let router join network with coordinator in 2 min. After 2 min, I power on End Device but End Device is still not joined. By the way, all 3 of Xbee modules are close to each other in this case. Can you please guide me this setup ?

What other settings have been changed from their default configuration?