Endpoints may be thought of as a virtual wire and serve three purposes in ZigBee®: provide a location within a node to connect two services, provide addressing within the node, and support multiple application profiles within a node. Endpoints are numbered as follows: application endpoints are numbered 1 to 240; endpoint 0 is for the ZigBee Device Profile, a set of common ZigBee services available in all nodes; endpoint 255 is the broadcast endpoint; and a message to endpoint 255 is delivered to all endpoints in the receiving node with the same application profile as the sender.