A housing assembly for use in a portable electronic device, includes a keypad board, a circuit board, and a main body. In one exemplary embodiment of the present disclosure, a node of a wireless network monitors traffic from at least one foreign network. The memory may store a request for an advertisement and an advertisement. The mass storage device further includes the first memory and the second memories and a hybrid reserved area spanning at least a portion of the first and second memories. The indoor units control the functioning of the outdoor units by transmitting digital messages along the interface cables. A method of making a thrust ring is provided.