Simultaneous data frames to Xbee coordinator(API mode)

I have coordinator and other 15 routers (xbee s2) in API mode. I would like to know what happens if multiple routers send packets to coordinator at the same time?

There is a counter-collision algorithme that prevent collision between frame send. If a router see that there is already data which is send, he will wait and retry. But I don’t know it a router can see the data sent by another router which is too far from him to see if he emit.

Hope i help you :slight_smile: