@Ray I'm sorry
i was opened the internet from the mobile and i can't deal well with the internet through the mobile.
Yes, I do understand! I am on as portable Android device at this moment and editing is awkward to very difficult.
but this problem makes me crazy and i'm search in google to help me but i'm find many ways to do the connect between two xbee that makes me Confused.
My experience is solely with the RF12B.
http://www.hackster.io/rayburne/hoperf-springs-eternal
Good luck. Jeremy did a tutorial on Xbee, it may be helpful:
And do not forget, the manufacturer has support facilities:
Support Services | Digi International including a forum: http://www.digi.com/support/forum/
Ray