A method of effecting handoff of a mobile station from a first base station in a first cellular communications system controlled by a first mobile switching control station to a second base station in a second, different cellular system controlled by a second mobile switching control station is described. Timing signals are transmitted along a shielded transmission line coincident with the wireless transmission through the medium. The files shared by a group are associated with a group folder. A dual chambered inner bladder separates the compressed gas inflated high-pressure low-volume bladder required for corrective turning from the higher-volume lower-pressure orally inflated chamber which provides the additional buoyancy needed to improve freieboard. Using the called party information a server retrieves information associated with the called party and then forward the information associated with the called party to an agent. The invention also relates to a fuel dispensing unit for refueling vehicles.