A Laboratory Model Magnetic Drum Translator for Toll Switching Offices

Abstract

A laboratory model magnetic drum translator, capable of serving as a one‐to‐one alternative to the card translator, has been built to study the problems arising from the prospective use of microsecond pulse apparatus in a telephone office environment. Electron tube amplifiers and germanium diode logic circuits supplement the drum information storage unit to provide the functional operations required. Results of preliminary laboratory tests indicate the feasibility of equipment of this kind for telephone switching control.