When an end device joins a network, it becomes a child of the device it joined to, and the device that allowed the join becomes the end device’s parent. Thereafter, the parent will manage RF data packets for the end device. The actual storage time is computed as (‘Sleep Period * 2.5), not exceeding 30 seconds. If end devices implement cyclic sleep, ‘Sleep Period’ should be set the same on a parent as it is on their sleeping end device children. In the case of pin sleep, where RF data could be received, the end device should wake within ‘Sleep Period’ time to ensure incoming RF data is not lost. The parent can only store one broadcast packet (the most recently received) for its end device children. If the parent receives an RF packet addressed to the end device, it will store the data packet until one of the following events occurs: