An adjustable write pulse generator is disclosed. The tool carriages are spaced from each other providing non-machining access durations wherein the workpiece may be loaded or unloaded from its rotating support spindles. The UL voice call communication may be a packet switched communication. Super resolution sample technique based on interpolation can be used to further increase resolution. A registration server is used by which to create the routing information, responsive to indications of a home network associated with the mobile node and a current location of the mobile node.