An off-line tool for breaking in pad conditioning disks used in a chemical mechanical polishing system. Particularly, the present invention provides a method of performing an access handoff in which a mobile station receives an extended channel assignment from a new base station without reception of overhead messages from the new base station, thereby allowing a traffic channel to be quickly assigned and providing a faster call connection for a user. By virtue of the space thus formed, air confined between the belt tooth and pulley tooth is allowed to escape in the transverse direction of the belt and does never produce bursting sound at the mesh of the belt tooth with the pulley tooth.