A method, system and device for call switching between a mobile device using a mobile communication network and any data communication equipment using other type of communication network without any disconnection of a on ongoing call is provided. The microprocessor may comprise a first array comprising a first plurality of microcode operations associated with an instruction from within the plurality of instructions, the first array capable of delivering a first predetermined number of microcode operations from the first plurality of microcode operations. The stator includes a plurality of stator laminations each having a winding wound therearound, and a shaft having opposite ends fixed with the upper partition and the lower partition. A central area is disposed between the first arm section and the second arm section. The second solid residue is separated from the primary filtrate comprising ammonium sulfate by any means suitable for separation of solids from liquids and is then dissolved, at a second pre-selected pH, to form a Group VIB metal precipitate and a Group VIII metal containing solution. At least one of the upper fastening hole and the lower fastening hole connects to a lateral opening inside the spacer case.