The profiles, clusters and end points that have been described are mainly responsible for correct delivery of application specific data. In addition to them, the ZigBee stack contains ZigBee Device Object (ZDO) that simplifies network management by user applications. A ZDO contains a ZigBee Device Profile (ZDP) that can be considered as another ZigBee application profile but designed for network management and not to exchange application specific data. The ZDP provides formats for command requests and responses necessary to support the networking functionality common for all devices in a ZigBee network.