Zigbee Access Path: From Channel Discovery to Endpoint Traffic
Many Zigbee field problems sound like very simple statements at first: the device cannot join the network, or it has already joined but still cannot be controlled. Once you break it apart, the bottleneck is often in a completely different stage. Some devices never found the target channel. Some saw the Beacon but were not allowed to join. Some already received a NWK (Network) short address, but ZCL (Zigbee Cluster Library) commands still would not go through. Others have no network-layer problem at all, and are instead blocked by endpoints, Clusters, or binding relations.