Radio network subsystems are provided that are in communications with a core network. The metal line of a semiconductor device is made by forming an interlayer dielectric having a metal line forming region on a semiconductor substrate. At least one bond pad is positioned on an active surface of the die, and a gold bump is provided on the bond pad; furthermore, a ball bond can be positioned upon the gold bump. The locking device may includes a plurality of cam locks that engage the outer circumferential edge of the cover and are configured to increasingly clamp down the cover against the frame with increasing rotation from \u201cunlocked\u201d position to \u201clocked\u201d position. A random module can enable random retrieval of various dog barking sounds from memory for processing. Two rear tricycle wheels are mounted to the rear wheel frame.