A bearing is to be engaged between two or more machine elements, and includes an endless ball chain, and two offset rows of balls engaged in the endless ball chain, for forming an endless planer structure to resist the forces transmitted between the machine elements. The method includes receiving a Diameter message associated with a mobile device. The media server includes multiple communication termination-link components, and the communication termination-link components are adapted to couple to trunks that extend to the telephone network. The data logger may store the data, and may communicate the data to a remote location via a network such as the Internet.