The present invention relates to a method of managing a trunk, and querying and ascertaining a ring-back sound to provide the ring-back sound in a subscriber-based ring-back sound service. The spring portion can have a split section that is divided into two sections. Addressing and control circuitry is coupled to the array of single word line memory cells. Flexible supports attach the frame to a fixed structure so that the frame may be moved axially, or moved axially as well as rotated, while being held at a fixed radial position along an axis. The battery is installed on the cover plate or above the cover plate.