A strike plate against which sheets exiting a printer contact prior to falling into a receiving tray, the strike plate comprising: a) at least one strike face ; and b) a generally outward directed abutment surface at an upper portion of the strike face, said direction being referenced to said strike face. The transitioning passage has an innermost turning side and an opposite outermost turning side longer than the innermost turning side. The intermediary device then accesses a billing plan for the authenticated identity of the callee and loads the billing plan for specifying charges for the call, such that telephone service billed to the callee is accessible at multiple destination devices. Related telemetric-circuits and apparatus are also disclosed. , a reference oscillator, using the measured frequency error. The modular assembly may include either a gas tube or a solid state surge protector, a fail safe device, an insulator member that is melted by the fail safe device when needed, a backup air gap formed in two different ways, and conductive shunt bars for use when the spring clips are not used.