THE DESIGN AND OPERATION OF GERMAN TELEPHONE EXCHANGE EQUIPMENT

摘要

This report is not a description of the whole state and working of telephone exchange equipment in Germany since much of it is generally known. Its chief concern is to record new developments (both in being or planned) in the years immediately preceeding the war and during the war years, which as far as can be ascertained are not fully known outside Germany. However, some general connected picture of up-to-date practice and performance is included both us a back¬ground and to allow of comparison of the important features with practice in allied countries.