I have two XB24-AWI chips in API mode (function Set: 802.15.4 / Firmware: 10ef)
I'm pressing a button attached to DI0 on the end device, it seems to just stop transmitting frames randomly after 20 or so seconds. Then will resume again after a bit of a delay.
Only relavant settings that are not default are:
AP = API Enabled 
DIO0 = DI 
IC "DIO CHANGE DETECT" = FF
Could anyone suggest possible causes for a random delay in transmitting?